1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010 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_MACHINE_CODE EM_PPC64
65 #define ELF_MAXPAGESIZE 0x10000
66 #define ELF_COMMONPAGESIZE 0x1000
67 #define elf_info_to_howto ppc64_elf_info_to_howto
69 #define elf_backend_want_got_sym 0
70 #define elf_backend_want_plt_sym 0
71 #define elf_backend_plt_alignment 3
72 #define elf_backend_plt_not_loaded 1
73 #define elf_backend_got_header_size 8
74 #define elf_backend_can_gc_sections 1
75 #define elf_backend_can_refcount 1
76 #define elf_backend_rela_normal 1
77 #define elf_backend_default_execstack 0
79 #define bfd_elf64_mkobject ppc64_elf_mkobject
80 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
81 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
82 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
86 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define elf_backend_object_p ppc64_elf_object_p
89 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
91 #define elf_backend_write_core_note ppc64_elf_write_core_note
92 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
94 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
95 #define elf_backend_check_directives ppc64_elf_process_dot_syms
96 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
97 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
98 #define elf_backend_check_relocs ppc64_elf_check_relocs
99 #define elf_backend_gc_keep ppc64_elf_gc_keep
100 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
101 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
105 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
107 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
108 #define elf_backend_action_discarded ppc64_elf_action_discarded
109 #define elf_backend_relocate_section ppc64_elf_relocate_section
110 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
113 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
114 #define elf_backend_special_sections ppc64_elf_special_sections
115 #define elf_backend_post_process_headers _bfd_elf_set_osabi
117 /* The name of the dynamic interpreter. This is put in the .interp
119 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
121 /* The size in bytes of an entry in the procedure linkage table. */
122 #define PLT_ENTRY_SIZE 24
124 /* The initial size of the plt reserved for the dynamic linker. */
125 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
127 /* TOC base pointers offset from start of TOC. */
128 #define TOC_BASE_OFF 0x8000
130 /* Offset of tp and dtp pointers from start of TLS block. */
131 #define TP_OFFSET 0x7000
132 #define DTP_OFFSET 0x8000
134 /* .plt call stub instructions. The normal stub is like this, but
135 sometimes the .plt entry crosses a 64k boundary and we need to
136 insert an addi to adjust r12. */
137 #define PLT_CALL_STUB_SIZE (7*4)
138 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
139 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
140 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
141 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
142 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
143 /* ld %r11,xxx+16@l(%r12) */
144 #define BCTR 0x4e800420 /* bctr */
147 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
148 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
149 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
150 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
152 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
153 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
155 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
157 /* glink call stub instructions. We enter with the index in R0. */
158 #define GLINK_CALL_STUB_SIZE (16*4)
162 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
163 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
165 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
166 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
167 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
168 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
176 #define NOP 0x60000000
178 /* Some other nops. */
179 #define CROR_151515 0x4def7b82
180 #define CROR_313131 0x4ffffb82
182 /* .glink entries for the first 32k functions are two instructions. */
183 #define LI_R0_0 0x38000000 /* li %r0,0 */
184 #define B_DOT 0x48000000 /* b . */
186 /* After that, we need two instructions to load the index, followed by
188 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
189 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
191 /* Instructions used by the save and restore reg functions. */
192 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
193 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
194 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
195 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
196 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
197 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
198 #define LI_R12_0 0x39800000 /* li %r12,0 */
199 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
200 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
201 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
202 #define BLR 0x4e800020 /* blr */
204 /* Since .opd is an array of descriptors and each entry will end up
205 with identical R_PPC64_RELATIVE relocs, there is really no need to
206 propagate .opd relocs; The dynamic linker should be taught to
207 relocate .opd without reloc entries. */
208 #ifndef NO_OPD_RELOCS
209 #define NO_OPD_RELOCS 0
212 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
214 /* Relocation HOWTO's. */
215 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
217 static reloc_howto_type ppc64_elf_howto_raw
[] = {
218 /* This reloc does nothing. */
219 HOWTO (R_PPC64_NONE
, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE
, /* pc_relative */
225 complain_overflow_dont
, /* complain_on_overflow */
226 bfd_elf_generic_reloc
, /* special_function */
227 "R_PPC64_NONE", /* name */
228 FALSE
, /* partial_inplace */
231 FALSE
), /* pcrel_offset */
233 /* A standard 32 bit relocation. */
234 HOWTO (R_PPC64_ADDR32
, /* type */
236 2, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE
, /* pc_relative */
240 complain_overflow_bitfield
, /* complain_on_overflow */
241 bfd_elf_generic_reloc
, /* special_function */
242 "R_PPC64_ADDR32", /* name */
243 FALSE
, /* partial_inplace */
245 0xffffffff, /* dst_mask */
246 FALSE
), /* pcrel_offset */
248 /* An absolute 26 bit branch; the lower two bits must be zero.
249 FIXME: we don't check that, we just clear them. */
250 HOWTO (R_PPC64_ADDR24
, /* type */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE
, /* pc_relative */
256 complain_overflow_bitfield
, /* complain_on_overflow */
257 bfd_elf_generic_reloc
, /* special_function */
258 "R_PPC64_ADDR24", /* name */
259 FALSE
, /* partial_inplace */
261 0x03fffffc, /* dst_mask */
262 FALSE
), /* pcrel_offset */
264 /* A standard 16 bit relocation. */
265 HOWTO (R_PPC64_ADDR16
, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE
, /* pc_relative */
271 complain_overflow_bitfield
, /* complain_on_overflow */
272 bfd_elf_generic_reloc
, /* special_function */
273 "R_PPC64_ADDR16", /* name */
274 FALSE
, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE
), /* pcrel_offset */
279 /* A 16 bit relocation without overflow. */
280 HOWTO (R_PPC64_ADDR16_LO
, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE
, /* pc_relative */
286 complain_overflow_dont
,/* complain_on_overflow */
287 bfd_elf_generic_reloc
, /* special_function */
288 "R_PPC64_ADDR16_LO", /* name */
289 FALSE
, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE
), /* pcrel_offset */
294 /* Bits 16-31 of an address. */
295 HOWTO (R_PPC64_ADDR16_HI
, /* type */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE
, /* pc_relative */
301 complain_overflow_dont
, /* complain_on_overflow */
302 bfd_elf_generic_reloc
, /* special_function */
303 "R_PPC64_ADDR16_HI", /* name */
304 FALSE
, /* partial_inplace */
306 0xffff, /* dst_mask */
307 FALSE
), /* pcrel_offset */
309 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
310 bits, treated as a signed number, is negative. */
311 HOWTO (R_PPC64_ADDR16_HA
, /* type */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
315 FALSE
, /* pc_relative */
317 complain_overflow_dont
, /* complain_on_overflow */
318 ppc64_elf_ha_reloc
, /* special_function */
319 "R_PPC64_ADDR16_HA", /* name */
320 FALSE
, /* partial_inplace */
322 0xffff, /* dst_mask */
323 FALSE
), /* pcrel_offset */
325 /* An absolute 16 bit branch; the lower two bits must be zero.
326 FIXME: we don't check that, we just clear them. */
327 HOWTO (R_PPC64_ADDR14
, /* type */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
331 FALSE
, /* pc_relative */
333 complain_overflow_bitfield
, /* complain_on_overflow */
334 ppc64_elf_branch_reloc
, /* special_function */
335 "R_PPC64_ADDR14", /* name */
336 FALSE
, /* partial_inplace */
338 0x0000fffc, /* dst_mask */
339 FALSE
), /* pcrel_offset */
341 /* An absolute 16 bit branch, for which bit 10 should be set to
342 indicate that the branch is expected to be taken. The lower two
343 bits must be zero. */
344 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE
, /* pc_relative */
350 complain_overflow_bitfield
, /* complain_on_overflow */
351 ppc64_elf_brtaken_reloc
, /* special_function */
352 "R_PPC64_ADDR14_BRTAKEN",/* name */
353 FALSE
, /* partial_inplace */
355 0x0000fffc, /* dst_mask */
356 FALSE
), /* pcrel_offset */
358 /* An absolute 16 bit branch, for which bit 10 should be set to
359 indicate that the branch is not expected to be taken. The lower
360 two bits must be zero. */
361 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE
, /* pc_relative */
367 complain_overflow_bitfield
, /* complain_on_overflow */
368 ppc64_elf_brtaken_reloc
, /* special_function */
369 "R_PPC64_ADDR14_BRNTAKEN",/* name */
370 FALSE
, /* partial_inplace */
372 0x0000fffc, /* dst_mask */
373 FALSE
), /* pcrel_offset */
375 /* A relative 26 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL24
, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE
, /* pc_relative */
382 complain_overflow_signed
, /* complain_on_overflow */
383 ppc64_elf_branch_reloc
, /* special_function */
384 "R_PPC64_REL24", /* name */
385 FALSE
, /* partial_inplace */
387 0x03fffffc, /* dst_mask */
388 TRUE
), /* pcrel_offset */
390 /* A relative 16 bit branch; the lower two bits must be zero. */
391 HOWTO (R_PPC64_REL14
, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 TRUE
, /* pc_relative */
397 complain_overflow_signed
, /* complain_on_overflow */
398 ppc64_elf_branch_reloc
, /* special_function */
399 "R_PPC64_REL14", /* name */
400 FALSE
, /* partial_inplace */
402 0x0000fffc, /* dst_mask */
403 TRUE
), /* pcrel_offset */
405 /* A relative 16 bit branch. Bit 10 should be set to indicate that
406 the branch is expected to be taken. The lower two bits must be
408 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE
, /* pc_relative */
414 complain_overflow_signed
, /* complain_on_overflow */
415 ppc64_elf_brtaken_reloc
, /* special_function */
416 "R_PPC64_REL14_BRTAKEN", /* name */
417 FALSE
, /* partial_inplace */
419 0x0000fffc, /* dst_mask */
420 TRUE
), /* pcrel_offset */
422 /* A relative 16 bit branch. Bit 10 should be set to indicate that
423 the branch is not expected to be taken. The lower two bits must
425 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
429 TRUE
, /* pc_relative */
431 complain_overflow_signed
, /* complain_on_overflow */
432 ppc64_elf_brtaken_reloc
, /* special_function */
433 "R_PPC64_REL14_BRNTAKEN",/* name */
434 FALSE
, /* partial_inplace */
436 0x0000fffc, /* dst_mask */
437 TRUE
), /* pcrel_offset */
439 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
441 HOWTO (R_PPC64_GOT16
, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE
, /* pc_relative */
447 complain_overflow_signed
, /* complain_on_overflow */
448 ppc64_elf_unhandled_reloc
, /* special_function */
449 "R_PPC64_GOT16", /* name */
450 FALSE
, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE
), /* pcrel_offset */
455 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
457 HOWTO (R_PPC64_GOT16_LO
, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE
, /* pc_relative */
463 complain_overflow_dont
, /* complain_on_overflow */
464 ppc64_elf_unhandled_reloc
, /* special_function */
465 "R_PPC64_GOT16_LO", /* name */
466 FALSE
, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE
), /* pcrel_offset */
471 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
473 HOWTO (R_PPC64_GOT16_HI
, /* type */
475 1, /* size (0 = byte, 1 = short, 2 = long) */
477 FALSE
, /* pc_relative */
479 complain_overflow_dont
,/* complain_on_overflow */
480 ppc64_elf_unhandled_reloc
, /* special_function */
481 "R_PPC64_GOT16_HI", /* name */
482 FALSE
, /* partial_inplace */
484 0xffff, /* dst_mask */
485 FALSE
), /* pcrel_offset */
487 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
489 HOWTO (R_PPC64_GOT16_HA
, /* type */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
493 FALSE
, /* pc_relative */
495 complain_overflow_dont
,/* complain_on_overflow */
496 ppc64_elf_unhandled_reloc
, /* special_function */
497 "R_PPC64_GOT16_HA", /* name */
498 FALSE
, /* partial_inplace */
500 0xffff, /* dst_mask */
501 FALSE
), /* pcrel_offset */
503 /* This is used only by the dynamic linker. The symbol should exist
504 both in the object being run and in some shared library. The
505 dynamic linker copies the data addressed by the symbol from the
506 shared library into the object, because the object being
507 run has to have the data at some particular address. */
508 HOWTO (R_PPC64_COPY
, /* type */
510 0, /* this one is variable size */
512 FALSE
, /* pc_relative */
514 complain_overflow_dont
, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc
, /* special_function */
516 "R_PPC64_COPY", /* name */
517 FALSE
, /* partial_inplace */
520 FALSE
), /* pcrel_offset */
522 /* Like R_PPC64_ADDR64, but used when setting global offset table
524 HOWTO (R_PPC64_GLOB_DAT
, /* type */
526 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
528 FALSE
, /* pc_relative */
530 complain_overflow_dont
, /* complain_on_overflow */
531 ppc64_elf_unhandled_reloc
, /* special_function */
532 "R_PPC64_GLOB_DAT", /* name */
533 FALSE
, /* partial_inplace */
535 ONES (64), /* dst_mask */
536 FALSE
), /* pcrel_offset */
538 /* Created by the link editor. Marks a procedure linkage table
539 entry for a symbol. */
540 HOWTO (R_PPC64_JMP_SLOT
, /* type */
542 0, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE
, /* pc_relative */
546 complain_overflow_dont
, /* complain_on_overflow */
547 ppc64_elf_unhandled_reloc
, /* special_function */
548 "R_PPC64_JMP_SLOT", /* name */
549 FALSE
, /* partial_inplace */
552 FALSE
), /* pcrel_offset */
554 /* Used only by the dynamic linker. When the object is run, this
555 doubleword64 is set to the load address of the object, plus the
557 HOWTO (R_PPC64_RELATIVE
, /* type */
559 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
561 FALSE
, /* pc_relative */
563 complain_overflow_dont
, /* complain_on_overflow */
564 bfd_elf_generic_reloc
, /* special_function */
565 "R_PPC64_RELATIVE", /* name */
566 FALSE
, /* partial_inplace */
568 ONES (64), /* dst_mask */
569 FALSE
), /* pcrel_offset */
571 /* Like R_PPC64_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR32
, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE
, /* pc_relative */
578 complain_overflow_bitfield
, /* complain_on_overflow */
579 bfd_elf_generic_reloc
, /* special_function */
580 "R_PPC64_UADDR32", /* name */
581 FALSE
, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE
), /* pcrel_offset */
586 /* Like R_PPC64_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC64_UADDR16
, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_bitfield
, /* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_PPC64_UADDR16", /* name */
596 FALSE
, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 /* 32-bit PC relative. */
602 HOWTO (R_PPC64_REL32
, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE
, /* pc_relative */
608 /* FIXME: Verify. Was complain_overflow_bitfield. */
609 complain_overflow_signed
, /* complain_on_overflow */
610 bfd_elf_generic_reloc
, /* special_function */
611 "R_PPC64_REL32", /* name */
612 FALSE
, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE
), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table. */
618 HOWTO (R_PPC64_PLT32
, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE
, /* pc_relative */
624 complain_overflow_bitfield
, /* complain_on_overflow */
625 ppc64_elf_unhandled_reloc
, /* special_function */
626 "R_PPC64_PLT32", /* name */
627 FALSE
, /* partial_inplace */
629 0xffffffff, /* dst_mask */
630 FALSE
), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: R_PPC64_PLTREL32 not supported. */
634 HOWTO (R_PPC64_PLTREL32
, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE
, /* pc_relative */
640 complain_overflow_signed
, /* complain_on_overflow */
641 bfd_elf_generic_reloc
, /* special_function */
642 "R_PPC64_PLTREL32", /* name */
643 FALSE
, /* partial_inplace */
645 0xffffffff, /* dst_mask */
646 TRUE
), /* pcrel_offset */
648 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC64_PLT16_LO
, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE
, /* pc_relative */
656 complain_overflow_dont
, /* complain_on_overflow */
657 ppc64_elf_unhandled_reloc
, /* special_function */
658 "R_PPC64_PLT16_LO", /* name */
659 FALSE
, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE
), /* pcrel_offset */
664 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC64_PLT16_HI
, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE
, /* pc_relative */
672 complain_overflow_dont
, /* complain_on_overflow */
673 ppc64_elf_unhandled_reloc
, /* special_function */
674 "R_PPC64_PLT16_HI", /* name */
675 FALSE
, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE
), /* pcrel_offset */
680 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC64_PLT16_HA
, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE
, /* pc_relative */
688 complain_overflow_dont
, /* complain_on_overflow */
689 ppc64_elf_unhandled_reloc
, /* special_function */
690 "R_PPC64_PLT16_HA", /* name */
691 FALSE
, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE
), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC64_SECTOFF
, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE
, /* pc_relative */
703 complain_overflow_bitfield
, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc
, /* special_function */
705 "R_PPC64_SECTOFF", /* name */
706 FALSE
, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE
), /* pcrel_offset */
711 /* Like R_PPC64_SECTOFF, but no overflow warning. */
712 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE
, /* pc_relative */
718 complain_overflow_dont
, /* complain_on_overflow */
719 ppc64_elf_sectoff_reloc
, /* special_function */
720 "R_PPC64_SECTOFF_LO", /* name */
721 FALSE
, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE
), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE
, /* pc_relative */
733 complain_overflow_dont
, /* complain_on_overflow */
734 ppc64_elf_sectoff_reloc
, /* special_function */
735 "R_PPC64_SECTOFF_HI", /* name */
736 FALSE
, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE
), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE
, /* pc_relative */
748 complain_overflow_dont
, /* complain_on_overflow */
749 ppc64_elf_sectoff_ha_reloc
, /* special_function */
750 "R_PPC64_SECTOFF_HA", /* name */
751 FALSE
, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE
), /* pcrel_offset */
756 /* Like R_PPC64_REL24 without touching the two least significant bits. */
757 HOWTO (R_PPC64_REL30
, /* type */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 TRUE
, /* pc_relative */
763 complain_overflow_dont
, /* complain_on_overflow */
764 bfd_elf_generic_reloc
, /* special_function */
765 "R_PPC64_REL30", /* name */
766 FALSE
, /* partial_inplace */
768 0xfffffffc, /* dst_mask */
769 TRUE
), /* pcrel_offset */
771 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
773 /* A standard 64-bit relocation. */
774 HOWTO (R_PPC64_ADDR64
, /* type */
776 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
778 FALSE
, /* pc_relative */
780 complain_overflow_dont
, /* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_PPC64_ADDR64", /* name */
783 FALSE
, /* partial_inplace */
785 ONES (64), /* dst_mask */
786 FALSE
), /* pcrel_offset */
788 /* The bits 32-47 of an address. */
789 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
791 1, /* size (0 = byte, 1 = short, 2 = long) */
793 FALSE
, /* pc_relative */
795 complain_overflow_dont
, /* complain_on_overflow */
796 bfd_elf_generic_reloc
, /* special_function */
797 "R_PPC64_ADDR16_HIGHER", /* name */
798 FALSE
, /* partial_inplace */
800 0xffff, /* dst_mask */
801 FALSE
), /* pcrel_offset */
803 /* The bits 32-47 of an address, plus 1 if the contents of the low
804 16 bits, treated as a signed number, is negative. */
805 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE
, /* pc_relative */
811 complain_overflow_dont
, /* complain_on_overflow */
812 ppc64_elf_ha_reloc
, /* special_function */
813 "R_PPC64_ADDR16_HIGHERA", /* name */
814 FALSE
, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE
), /* pcrel_offset */
819 /* The bits 48-63 of an address. */
820 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE
, /* pc_relative */
826 complain_overflow_dont
, /* complain_on_overflow */
827 bfd_elf_generic_reloc
, /* special_function */
828 "R_PPC64_ADDR16_HIGHEST", /* name */
829 FALSE
, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE
), /* pcrel_offset */
834 /* The bits 48-63 of an address, plus 1 if the contents of the low
835 16 bits, treated as a signed number, is negative. */
836 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
838 1, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE
, /* pc_relative */
842 complain_overflow_dont
, /* complain_on_overflow */
843 ppc64_elf_ha_reloc
, /* special_function */
844 "R_PPC64_ADDR16_HIGHESTA", /* name */
845 FALSE
, /* partial_inplace */
847 0xffff, /* dst_mask */
848 FALSE
), /* pcrel_offset */
850 /* Like ADDR64, but may be unaligned. */
851 HOWTO (R_PPC64_UADDR64
, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 FALSE
, /* pc_relative */
857 complain_overflow_dont
, /* complain_on_overflow */
858 bfd_elf_generic_reloc
, /* special_function */
859 "R_PPC64_UADDR64", /* name */
860 FALSE
, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 FALSE
), /* pcrel_offset */
865 /* 64-bit relative relocation. */
866 HOWTO (R_PPC64_REL64
, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 TRUE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 bfd_elf_generic_reloc
, /* special_function */
874 "R_PPC64_REL64", /* name */
875 FALSE
, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 TRUE
), /* pcrel_offset */
880 /* 64-bit relocation to the symbol's procedure linkage table. */
881 HOWTO (R_PPC64_PLT64
, /* type */
883 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
885 FALSE
, /* pc_relative */
887 complain_overflow_dont
, /* complain_on_overflow */
888 ppc64_elf_unhandled_reloc
, /* special_function */
889 "R_PPC64_PLT64", /* name */
890 FALSE
, /* partial_inplace */
892 ONES (64), /* dst_mask */
893 FALSE
), /* pcrel_offset */
895 /* 64-bit PC relative relocation to the symbol's procedure linkage
897 /* FIXME: R_PPC64_PLTREL64 not supported. */
898 HOWTO (R_PPC64_PLTREL64
, /* type */
900 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
902 TRUE
, /* pc_relative */
904 complain_overflow_dont
, /* complain_on_overflow */
905 ppc64_elf_unhandled_reloc
, /* special_function */
906 "R_PPC64_PLTREL64", /* name */
907 FALSE
, /* partial_inplace */
909 ONES (64), /* dst_mask */
910 TRUE
), /* pcrel_offset */
912 /* 16 bit TOC-relative relocation. */
914 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
915 HOWTO (R_PPC64_TOC16
, /* type */
917 1, /* size (0 = byte, 1 = short, 2 = long) */
919 FALSE
, /* pc_relative */
921 complain_overflow_signed
, /* complain_on_overflow */
922 ppc64_elf_toc_reloc
, /* special_function */
923 "R_PPC64_TOC16", /* name */
924 FALSE
, /* partial_inplace */
926 0xffff, /* dst_mask */
927 FALSE
), /* pcrel_offset */
929 /* 16 bit TOC-relative relocation without overflow. */
931 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
932 HOWTO (R_PPC64_TOC16_LO
, /* type */
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE
, /* pc_relative */
938 complain_overflow_dont
, /* complain_on_overflow */
939 ppc64_elf_toc_reloc
, /* special_function */
940 "R_PPC64_TOC16_LO", /* name */
941 FALSE
, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE
), /* pcrel_offset */
946 /* 16 bit TOC-relative relocation, high 16 bits. */
948 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
949 HOWTO (R_PPC64_TOC16_HI
, /* type */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
953 FALSE
, /* pc_relative */
955 complain_overflow_dont
, /* complain_on_overflow */
956 ppc64_elf_toc_reloc
, /* special_function */
957 "R_PPC64_TOC16_HI", /* name */
958 FALSE
, /* partial_inplace */
960 0xffff, /* dst_mask */
961 FALSE
), /* pcrel_offset */
963 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
964 contents of the low 16 bits, treated as a signed number, is
967 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
968 HOWTO (R_PPC64_TOC16_HA
, /* type */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE
, /* pc_relative */
974 complain_overflow_dont
, /* complain_on_overflow */
975 ppc64_elf_toc_ha_reloc
, /* special_function */
976 "R_PPC64_TOC16_HA", /* name */
977 FALSE
, /* partial_inplace */
979 0xffff, /* dst_mask */
980 FALSE
), /* pcrel_offset */
982 /* 64-bit relocation; insert value of TOC base (.TOC.). */
984 /* R_PPC64_TOC 51 doubleword64 .TOC. */
985 HOWTO (R_PPC64_TOC
, /* type */
987 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
989 FALSE
, /* pc_relative */
991 complain_overflow_bitfield
, /* complain_on_overflow */
992 ppc64_elf_toc64_reloc
, /* special_function */
993 "R_PPC64_TOC", /* name */
994 FALSE
, /* partial_inplace */
996 ONES (64), /* dst_mask */
997 FALSE
), /* pcrel_offset */
999 /* Like R_PPC64_GOT16, but also informs the link editor that the
1000 value to relocate may (!) refer to a PLT entry which the link
1001 editor (a) may replace with the symbol value. If the link editor
1002 is unable to fully resolve the symbol, it may (b) create a PLT
1003 entry and store the address to the new PLT entry in the GOT.
1004 This permits lazy resolution of function symbols at run time.
1005 The link editor may also skip all of this and just (c) emit a
1006 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1007 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1008 HOWTO (R_PPC64_PLTGOT16
, /* type */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE
, /* pc_relative */
1014 complain_overflow_signed
, /* complain_on_overflow */
1015 ppc64_elf_unhandled_reloc
, /* special_function */
1016 "R_PPC64_PLTGOT16", /* name */
1017 FALSE
, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE
), /* pcrel_offset */
1022 /* Like R_PPC64_PLTGOT16, but without overflow. */
1023 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1024 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE
, /* pc_relative */
1030 complain_overflow_dont
, /* complain_on_overflow */
1031 ppc64_elf_unhandled_reloc
, /* special_function */
1032 "R_PPC64_PLTGOT16_LO", /* name */
1033 FALSE
, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE
), /* pcrel_offset */
1038 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1039 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1040 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 FALSE
, /* pc_relative */
1046 complain_overflow_dont
, /* complain_on_overflow */
1047 ppc64_elf_unhandled_reloc
, /* special_function */
1048 "R_PPC64_PLTGOT16_HI", /* name */
1049 FALSE
, /* partial_inplace */
1051 0xffff, /* dst_mask */
1052 FALSE
), /* pcrel_offset */
1054 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1055 1 if the contents of the low 16 bits, treated as a signed number,
1057 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1059 16, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE
, /* pc_relative */
1064 complain_overflow_dont
,/* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc
, /* special_function */
1066 "R_PPC64_PLTGOT16_HA", /* name */
1067 FALSE
, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE
), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_bitfield
, /* complain_on_overflow */
1080 bfd_elf_generic_reloc
, /* special_function */
1081 "R_PPC64_ADDR16_DS", /* name */
1082 FALSE
, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE
, /* pc_relative */
1094 complain_overflow_dont
,/* complain_on_overflow */
1095 bfd_elf_generic_reloc
, /* special_function */
1096 "R_PPC64_ADDR16_LO_DS",/* name */
1097 FALSE
, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE
), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_DS
, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE
, /* pc_relative */
1109 complain_overflow_signed
, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc
, /* special_function */
1111 "R_PPC64_GOT16_DS", /* name */
1112 FALSE
, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE
), /* pcrel_offset */
1117 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_dont
, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc
, /* special_function */
1126 "R_PPC64_GOT16_LO_DS", /* name */
1127 FALSE
, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_dont
, /* complain_on_overflow */
1140 ppc64_elf_unhandled_reloc
, /* special_function */
1141 "R_PPC64_PLT16_LO_DS", /* name */
1142 FALSE
, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE
, /* pc_relative */
1154 complain_overflow_bitfield
, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc
, /* special_function */
1156 "R_PPC64_SECTOFF_DS", /* name */
1157 FALSE
, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE
), /* pcrel_offset */
1162 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE
, /* pc_relative */
1169 complain_overflow_dont
, /* complain_on_overflow */
1170 ppc64_elf_sectoff_reloc
, /* special_function */
1171 "R_PPC64_SECTOFF_LO_DS",/* name */
1172 FALSE
, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE
), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_DS
, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE
, /* pc_relative */
1184 complain_overflow_signed
, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc
, /* special_function */
1186 "R_PPC64_TOC16_DS", /* name */
1187 FALSE
, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE
), /* pcrel_offset */
1192 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1193 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE
, /* pc_relative */
1199 complain_overflow_dont
, /* complain_on_overflow */
1200 ppc64_elf_toc_reloc
, /* special_function */
1201 "R_PPC64_TOC16_LO_DS", /* name */
1202 FALSE
, /* partial_inplace */
1204 0xfffc, /* dst_mask */
1205 FALSE
), /* pcrel_offset */
1207 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1208 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1209 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE
, /* pc_relative */
1215 complain_overflow_signed
, /* complain_on_overflow */
1216 ppc64_elf_unhandled_reloc
, /* special_function */
1217 "R_PPC64_PLTGOT16_DS", /* name */
1218 FALSE
, /* partial_inplace */
1220 0xfffc, /* dst_mask */
1221 FALSE
), /* pcrel_offset */
1223 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1224 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1225 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1227 1, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE
, /* pc_relative */
1231 complain_overflow_dont
, /* complain_on_overflow */
1232 ppc64_elf_unhandled_reloc
, /* special_function */
1233 "R_PPC64_PLTGOT16_LO_DS",/* name */
1234 FALSE
, /* partial_inplace */
1236 0xfffc, /* dst_mask */
1237 FALSE
), /* pcrel_offset */
1239 /* Marker relocs for TLS. */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE
, /* pc_relative */
1246 complain_overflow_dont
, /* complain_on_overflow */
1247 bfd_elf_generic_reloc
, /* special_function */
1248 "R_PPC64_TLS", /* name */
1249 FALSE
, /* partial_inplace */
1252 FALSE
), /* pcrel_offset */
1254 HOWTO (R_PPC64_TLSGD
,
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE
, /* pc_relative */
1260 complain_overflow_dont
, /* complain_on_overflow */
1261 bfd_elf_generic_reloc
, /* special_function */
1262 "R_PPC64_TLSGD", /* name */
1263 FALSE
, /* partial_inplace */
1266 FALSE
), /* pcrel_offset */
1268 HOWTO (R_PPC64_TLSLD
,
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE
, /* pc_relative */
1274 complain_overflow_dont
, /* complain_on_overflow */
1275 bfd_elf_generic_reloc
, /* special_function */
1276 "R_PPC64_TLSLD", /* name */
1277 FALSE
, /* partial_inplace */
1280 FALSE
), /* pcrel_offset */
1282 /* Computes the load module index of the load module that contains the
1283 definition of its TLS sym. */
1284 HOWTO (R_PPC64_DTPMOD64
,
1286 4, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE
, /* pc_relative */
1290 complain_overflow_dont
, /* complain_on_overflow */
1291 ppc64_elf_unhandled_reloc
, /* special_function */
1292 "R_PPC64_DTPMOD64", /* name */
1293 FALSE
, /* partial_inplace */
1295 ONES (64), /* dst_mask */
1296 FALSE
), /* pcrel_offset */
1298 /* Computes a dtv-relative displacement, the difference between the value
1299 of sym+add and the base address of the thread-local storage block that
1300 contains the definition of sym, minus 0x8000. */
1301 HOWTO (R_PPC64_DTPREL64
,
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE
, /* pc_relative */
1307 complain_overflow_dont
, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc
, /* special_function */
1309 "R_PPC64_DTPREL64", /* name */
1310 FALSE
, /* partial_inplace */
1312 ONES (64), /* dst_mask */
1313 FALSE
), /* pcrel_offset */
1315 /* A 16 bit dtprel reloc. */
1316 HOWTO (R_PPC64_DTPREL16
,
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 FALSE
, /* pc_relative */
1322 complain_overflow_signed
, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc
, /* special_function */
1324 "R_PPC64_DTPREL16", /* name */
1325 FALSE
, /* partial_inplace */
1327 0xffff, /* dst_mask */
1328 FALSE
), /* pcrel_offset */
1330 /* Like DTPREL16, but no overflow. */
1331 HOWTO (R_PPC64_DTPREL16_LO
,
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE
, /* pc_relative */
1337 complain_overflow_dont
, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc
, /* special_function */
1339 "R_PPC64_DTPREL16_LO", /* name */
1340 FALSE
, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE
), /* pcrel_offset */
1345 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HI
,
1347 16, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE
, /* pc_relative */
1352 complain_overflow_dont
, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc
, /* special_function */
1354 "R_PPC64_DTPREL16_HI", /* name */
1355 FALSE
, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE
), /* pcrel_offset */
1360 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HA
,
1362 16, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 FALSE
, /* pc_relative */
1367 complain_overflow_dont
, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc
, /* special_function */
1369 "R_PPC64_DTPREL16_HA", /* name */
1370 FALSE
, /* partial_inplace */
1372 0xffff, /* dst_mask */
1373 FALSE
), /* pcrel_offset */
1375 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1377 32, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 FALSE
, /* pc_relative */
1382 complain_overflow_dont
, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc
, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHER", /* name */
1385 FALSE
, /* partial_inplace */
1387 0xffff, /* dst_mask */
1388 FALSE
), /* pcrel_offset */
1390 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1392 32, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE
, /* pc_relative */
1397 complain_overflow_dont
, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc
, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHERA", /* name */
1400 FALSE
, /* partial_inplace */
1402 0xffff, /* dst_mask */
1403 FALSE
), /* pcrel_offset */
1405 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1406 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1407 48, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 FALSE
, /* pc_relative */
1412 complain_overflow_dont
, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc
, /* special_function */
1414 "R_PPC64_DTPREL16_HIGHEST", /* name */
1415 FALSE
, /* partial_inplace */
1417 0xffff, /* dst_mask */
1418 FALSE
), /* pcrel_offset */
1420 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1421 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1422 48, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1425 FALSE
, /* pc_relative */
1427 complain_overflow_dont
, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc
, /* special_function */
1429 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1430 FALSE
, /* partial_inplace */
1432 0xffff, /* dst_mask */
1433 FALSE
), /* pcrel_offset */
1435 /* Like DTPREL16, but for insns with a DS field. */
1436 HOWTO (R_PPC64_DTPREL16_DS
,
1438 1, /* size (0 = byte, 1 = short, 2 = long) */
1440 FALSE
, /* pc_relative */
1442 complain_overflow_signed
, /* complain_on_overflow */
1443 ppc64_elf_unhandled_reloc
, /* special_function */
1444 "R_PPC64_DTPREL16_DS", /* name */
1445 FALSE
, /* partial_inplace */
1447 0xfffc, /* dst_mask */
1448 FALSE
), /* pcrel_offset */
1450 /* Like DTPREL16_DS, but no overflow. */
1451 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1453 1, /* size (0 = byte, 1 = short, 2 = long) */
1455 FALSE
, /* pc_relative */
1457 complain_overflow_dont
, /* complain_on_overflow */
1458 ppc64_elf_unhandled_reloc
, /* special_function */
1459 "R_PPC64_DTPREL16_LO_DS", /* name */
1460 FALSE
, /* partial_inplace */
1462 0xfffc, /* dst_mask */
1463 FALSE
), /* pcrel_offset */
1465 /* Computes a tp-relative displacement, the difference between the value of
1466 sym+add and the value of the thread pointer (r13). */
1467 HOWTO (R_PPC64_TPREL64
,
1469 4, /* size (0 = byte, 1 = short, 2 = long) */
1471 FALSE
, /* pc_relative */
1473 complain_overflow_dont
, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc
, /* special_function */
1475 "R_PPC64_TPREL64", /* name */
1476 FALSE
, /* partial_inplace */
1478 ONES (64), /* dst_mask */
1479 FALSE
), /* pcrel_offset */
1481 /* A 16 bit tprel reloc. */
1482 HOWTO (R_PPC64_TPREL16
,
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 FALSE
, /* pc_relative */
1488 complain_overflow_signed
, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc
, /* special_function */
1490 "R_PPC64_TPREL16", /* name */
1491 FALSE
, /* partial_inplace */
1493 0xffff, /* dst_mask */
1494 FALSE
), /* pcrel_offset */
1496 /* Like TPREL16, but no overflow. */
1497 HOWTO (R_PPC64_TPREL16_LO
,
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE
, /* pc_relative */
1503 complain_overflow_dont
, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc
, /* special_function */
1505 "R_PPC64_TPREL16_LO", /* name */
1506 FALSE
, /* partial_inplace */
1508 0xffff, /* dst_mask */
1509 FALSE
), /* pcrel_offset */
1511 /* Like TPREL16_LO, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HI
,
1513 16, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 FALSE
, /* pc_relative */
1518 complain_overflow_dont
, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc
, /* special_function */
1520 "R_PPC64_TPREL16_HI", /* name */
1521 FALSE
, /* partial_inplace */
1523 0xffff, /* dst_mask */
1524 FALSE
), /* pcrel_offset */
1526 /* Like TPREL16_HI, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HA
,
1528 16, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 FALSE
, /* pc_relative */
1533 complain_overflow_dont
, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc
, /* special_function */
1535 "R_PPC64_TPREL16_HA", /* name */
1536 FALSE
, /* partial_inplace */
1538 0xffff, /* dst_mask */
1539 FALSE
), /* pcrel_offset */
1541 /* Like TPREL16_HI, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHER
,
1543 32, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_dont
, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc
, /* special_function */
1550 "R_PPC64_TPREL16_HIGHER", /* name */
1551 FALSE
, /* partial_inplace */
1553 0xffff, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1558 32, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 FALSE
, /* pc_relative */
1563 complain_overflow_dont
, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc
, /* special_function */
1565 "R_PPC64_TPREL16_HIGHERA", /* name */
1566 FALSE
, /* partial_inplace */
1568 0xffff, /* dst_mask */
1569 FALSE
), /* pcrel_offset */
1571 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1572 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1573 48, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1576 FALSE
, /* pc_relative */
1578 complain_overflow_dont
, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc
, /* special_function */
1580 "R_PPC64_TPREL16_HIGHEST", /* name */
1581 FALSE
, /* partial_inplace */
1583 0xffff, /* dst_mask */
1584 FALSE
), /* pcrel_offset */
1586 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1587 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1588 48, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE
, /* pc_relative */
1593 complain_overflow_dont
, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc
, /* special_function */
1595 "R_PPC64_TPREL16_HIGHESTA", /* name */
1596 FALSE
, /* partial_inplace */
1598 0xffff, /* dst_mask */
1599 FALSE
), /* pcrel_offset */
1601 /* Like TPREL16, but for insns with a DS field. */
1602 HOWTO (R_PPC64_TPREL16_DS
,
1604 1, /* size (0 = byte, 1 = short, 2 = long) */
1606 FALSE
, /* pc_relative */
1608 complain_overflow_signed
, /* complain_on_overflow */
1609 ppc64_elf_unhandled_reloc
, /* special_function */
1610 "R_PPC64_TPREL16_DS", /* name */
1611 FALSE
, /* partial_inplace */
1613 0xfffc, /* dst_mask */
1614 FALSE
), /* pcrel_offset */
1616 /* Like TPREL16_DS, but no overflow. */
1617 HOWTO (R_PPC64_TPREL16_LO_DS
,
1619 1, /* size (0 = byte, 1 = short, 2 = long) */
1621 FALSE
, /* pc_relative */
1623 complain_overflow_dont
, /* complain_on_overflow */
1624 ppc64_elf_unhandled_reloc
, /* special_function */
1625 "R_PPC64_TPREL16_LO_DS", /* name */
1626 FALSE
, /* partial_inplace */
1628 0xfffc, /* dst_mask */
1629 FALSE
), /* pcrel_offset */
1631 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1632 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1633 to the first entry relative to the TOC base (r2). */
1634 HOWTO (R_PPC64_GOT_TLSGD16
,
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 FALSE
, /* pc_relative */
1640 complain_overflow_signed
, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc
, /* special_function */
1642 "R_PPC64_GOT_TLSGD16", /* name */
1643 FALSE
, /* partial_inplace */
1645 0xffff, /* dst_mask */
1646 FALSE
), /* pcrel_offset */
1648 /* Like GOT_TLSGD16, but no overflow. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE
, /* pc_relative */
1655 complain_overflow_dont
, /* complain_on_overflow */
1656 ppc64_elf_unhandled_reloc
, /* special_function */
1657 "R_PPC64_GOT_TLSGD16_LO", /* name */
1658 FALSE
, /* partial_inplace */
1660 0xffff, /* dst_mask */
1661 FALSE
), /* pcrel_offset */
1663 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1664 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1665 16, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1668 FALSE
, /* pc_relative */
1670 complain_overflow_dont
, /* complain_on_overflow */
1671 ppc64_elf_unhandled_reloc
, /* special_function */
1672 "R_PPC64_GOT_TLSGD16_HI", /* name */
1673 FALSE
, /* partial_inplace */
1675 0xffff, /* dst_mask */
1676 FALSE
), /* pcrel_offset */
1678 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1679 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE
, /* pc_relative */
1685 complain_overflow_dont
, /* complain_on_overflow */
1686 ppc64_elf_unhandled_reloc
, /* special_function */
1687 "R_PPC64_GOT_TLSGD16_HA", /* name */
1688 FALSE
, /* partial_inplace */
1690 0xffff, /* dst_mask */
1691 FALSE
), /* pcrel_offset */
1693 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1694 with values (sym+add)@dtpmod and zero, and computes the offset to the
1695 first entry relative to the TOC base (r2). */
1696 HOWTO (R_PPC64_GOT_TLSLD16
,
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 FALSE
, /* pc_relative */
1702 complain_overflow_signed
, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc
, /* special_function */
1704 "R_PPC64_GOT_TLSLD16", /* name */
1705 FALSE
, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 FALSE
), /* pcrel_offset */
1710 /* Like GOT_TLSLD16, but no overflow. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 FALSE
, /* pc_relative */
1717 complain_overflow_dont
, /* complain_on_overflow */
1718 ppc64_elf_unhandled_reloc
, /* special_function */
1719 "R_PPC64_GOT_TLSLD16_LO", /* name */
1720 FALSE
, /* partial_inplace */
1722 0xffff, /* dst_mask */
1723 FALSE
), /* pcrel_offset */
1725 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1726 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 FALSE
, /* pc_relative */
1732 complain_overflow_dont
, /* complain_on_overflow */
1733 ppc64_elf_unhandled_reloc
, /* special_function */
1734 "R_PPC64_GOT_TLSLD16_HI", /* name */
1735 FALSE
, /* partial_inplace */
1737 0xffff, /* dst_mask */
1738 FALSE
), /* pcrel_offset */
1740 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1741 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1742 16, /* rightshift */
1743 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 FALSE
, /* pc_relative */
1747 complain_overflow_dont
, /* complain_on_overflow */
1748 ppc64_elf_unhandled_reloc
, /* special_function */
1749 "R_PPC64_GOT_TLSLD16_HA", /* name */
1750 FALSE
, /* partial_inplace */
1752 0xffff, /* dst_mask */
1753 FALSE
), /* pcrel_offset */
1755 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1756 the offset to the entry relative to the TOC base (r2). */
1757 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1761 FALSE
, /* pc_relative */
1763 complain_overflow_signed
, /* complain_on_overflow */
1764 ppc64_elf_unhandled_reloc
, /* special_function */
1765 "R_PPC64_GOT_DTPREL16_DS", /* name */
1766 FALSE
, /* partial_inplace */
1768 0xfffc, /* dst_mask */
1769 FALSE
), /* pcrel_offset */
1771 /* Like GOT_DTPREL16_DS, but no overflow. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1776 FALSE
, /* pc_relative */
1778 complain_overflow_dont
, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc
, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1781 FALSE
, /* partial_inplace */
1783 0xfffc, /* dst_mask */
1784 FALSE
), /* pcrel_offset */
1786 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1787 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1788 16, /* rightshift */
1789 1, /* size (0 = byte, 1 = short, 2 = long) */
1791 FALSE
, /* pc_relative */
1793 complain_overflow_dont
, /* complain_on_overflow */
1794 ppc64_elf_unhandled_reloc
, /* special_function */
1795 "R_PPC64_GOT_DTPREL16_HI", /* name */
1796 FALSE
, /* partial_inplace */
1798 0xffff, /* dst_mask */
1799 FALSE
), /* pcrel_offset */
1801 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1802 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1803 16, /* rightshift */
1804 1, /* size (0 = byte, 1 = short, 2 = long) */
1806 FALSE
, /* pc_relative */
1808 complain_overflow_dont
, /* complain_on_overflow */
1809 ppc64_elf_unhandled_reloc
, /* special_function */
1810 "R_PPC64_GOT_DTPREL16_HA", /* name */
1811 FALSE
, /* partial_inplace */
1813 0xffff, /* dst_mask */
1814 FALSE
), /* pcrel_offset */
1816 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1817 offset to the entry relative to the TOC base (r2). */
1818 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1822 FALSE
, /* pc_relative */
1824 complain_overflow_signed
, /* complain_on_overflow */
1825 ppc64_elf_unhandled_reloc
, /* special_function */
1826 "R_PPC64_GOT_TPREL16_DS", /* name */
1827 FALSE
, /* partial_inplace */
1829 0xfffc, /* dst_mask */
1830 FALSE
), /* pcrel_offset */
1832 /* Like GOT_TPREL16_DS, but no overflow. */
1833 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1837 FALSE
, /* pc_relative */
1839 complain_overflow_dont
, /* complain_on_overflow */
1840 ppc64_elf_unhandled_reloc
, /* special_function */
1841 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1842 FALSE
, /* partial_inplace */
1844 0xfffc, /* dst_mask */
1845 FALSE
), /* pcrel_offset */
1847 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1848 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1849 16, /* rightshift */
1850 1, /* size (0 = byte, 1 = short, 2 = long) */
1852 FALSE
, /* pc_relative */
1854 complain_overflow_dont
, /* complain_on_overflow */
1855 ppc64_elf_unhandled_reloc
, /* special_function */
1856 "R_PPC64_GOT_TPREL16_HI", /* name */
1857 FALSE
, /* partial_inplace */
1859 0xffff, /* dst_mask */
1860 FALSE
), /* pcrel_offset */
1862 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1863 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1864 16, /* rightshift */
1865 1, /* size (0 = byte, 1 = short, 2 = long) */
1867 FALSE
, /* pc_relative */
1869 complain_overflow_dont
, /* complain_on_overflow */
1870 ppc64_elf_unhandled_reloc
, /* special_function */
1871 "R_PPC64_GOT_TPREL16_HA", /* name */
1872 FALSE
, /* partial_inplace */
1874 0xffff, /* dst_mask */
1875 FALSE
), /* pcrel_offset */
1877 HOWTO (R_PPC64_JMP_IREL
, /* type */
1879 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1881 FALSE
, /* pc_relative */
1883 complain_overflow_dont
, /* complain_on_overflow */
1884 ppc64_elf_unhandled_reloc
, /* special_function */
1885 "R_PPC64_JMP_IREL", /* name */
1886 FALSE
, /* partial_inplace */
1889 FALSE
), /* pcrel_offset */
1891 HOWTO (R_PPC64_IRELATIVE
, /* type */
1893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1895 FALSE
, /* pc_relative */
1897 complain_overflow_dont
, /* complain_on_overflow */
1898 bfd_elf_generic_reloc
, /* special_function */
1899 "R_PPC64_IRELATIVE", /* name */
1900 FALSE
, /* partial_inplace */
1902 ONES (64), /* dst_mask */
1903 FALSE
), /* pcrel_offset */
1905 /* A 16 bit relative relocation. */
1906 HOWTO (R_PPC64_REL16
, /* type */
1908 1, /* size (0 = byte, 1 = short, 2 = long) */
1910 TRUE
, /* pc_relative */
1912 complain_overflow_bitfield
, /* complain_on_overflow */
1913 bfd_elf_generic_reloc
, /* special_function */
1914 "R_PPC64_REL16", /* name */
1915 FALSE
, /* partial_inplace */
1917 0xffff, /* dst_mask */
1918 TRUE
), /* pcrel_offset */
1920 /* A 16 bit relative relocation without overflow. */
1921 HOWTO (R_PPC64_REL16_LO
, /* type */
1923 1, /* size (0 = byte, 1 = short, 2 = long) */
1925 TRUE
, /* pc_relative */
1927 complain_overflow_dont
,/* complain_on_overflow */
1928 bfd_elf_generic_reloc
, /* special_function */
1929 "R_PPC64_REL16_LO", /* name */
1930 FALSE
, /* partial_inplace */
1932 0xffff, /* dst_mask */
1933 TRUE
), /* pcrel_offset */
1935 /* The high order 16 bits of a relative address. */
1936 HOWTO (R_PPC64_REL16_HI
, /* type */
1937 16, /* rightshift */
1938 1, /* size (0 = byte, 1 = short, 2 = long) */
1940 TRUE
, /* pc_relative */
1942 complain_overflow_dont
, /* complain_on_overflow */
1943 bfd_elf_generic_reloc
, /* special_function */
1944 "R_PPC64_REL16_HI", /* name */
1945 FALSE
, /* partial_inplace */
1947 0xffff, /* dst_mask */
1948 TRUE
), /* pcrel_offset */
1950 /* The high order 16 bits of a relative address, plus 1 if the contents of
1951 the low 16 bits, treated as a signed number, is negative. */
1952 HOWTO (R_PPC64_REL16_HA
, /* type */
1953 16, /* rightshift */
1954 1, /* size (0 = byte, 1 = short, 2 = long) */
1956 TRUE
, /* pc_relative */
1958 complain_overflow_dont
, /* complain_on_overflow */
1959 ppc64_elf_ha_reloc
, /* special_function */
1960 "R_PPC64_REL16_HA", /* name */
1961 FALSE
, /* partial_inplace */
1963 0xffff, /* dst_mask */
1964 TRUE
), /* pcrel_offset */
1966 /* GNU extension to record C++ vtable hierarchy. */
1967 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1969 0, /* size (0 = byte, 1 = short, 2 = long) */
1971 FALSE
, /* pc_relative */
1973 complain_overflow_dont
, /* complain_on_overflow */
1974 NULL
, /* special_function */
1975 "R_PPC64_GNU_VTINHERIT", /* name */
1976 FALSE
, /* partial_inplace */
1979 FALSE
), /* pcrel_offset */
1981 /* GNU extension to record C++ vtable member usage. */
1982 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1984 0, /* size (0 = byte, 1 = short, 2 = long) */
1986 FALSE
, /* pc_relative */
1988 complain_overflow_dont
, /* complain_on_overflow */
1989 NULL
, /* special_function */
1990 "R_PPC64_GNU_VTENTRY", /* name */
1991 FALSE
, /* partial_inplace */
1994 FALSE
), /* pcrel_offset */
1998 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2002 ppc_howto_init (void)
2004 unsigned int i
, type
;
2007 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2010 type
= ppc64_elf_howto_raw
[i
].type
;
2011 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2012 / sizeof (ppc64_elf_howto_table
[0])));
2013 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2017 static reloc_howto_type
*
2018 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2019 bfd_reloc_code_real_type code
)
2021 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2023 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2024 /* Initialize howto table if needed. */
2032 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2034 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2036 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2038 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2040 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2042 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2044 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2046 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2048 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2050 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2052 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2054 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2056 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2058 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2060 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2062 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2064 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2066 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2068 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2070 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2072 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2074 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2076 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2078 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2080 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2082 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2084 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2086 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2088 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2090 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2092 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2094 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2096 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2098 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2100 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2102 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2104 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2106 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2108 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2110 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2112 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2114 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2116 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2118 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2120 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2122 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2124 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2126 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2128 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2130 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2132 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2134 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2136 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2138 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2140 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2142 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2144 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2146 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2148 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2150 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2152 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2154 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2156 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2158 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2160 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2162 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2164 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2166 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2168 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2170 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2172 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2174 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2176 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2178 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2180 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2186 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2188 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2194 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2196 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2198 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2202 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2204 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2210 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2212 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2214 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2222 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2224 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2226 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2234 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2236 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2238 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2240 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2242 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2244 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2248 return ppc64_elf_howto_table
[r
];
2251 static reloc_howto_type
*
2252 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2258 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2260 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2261 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2262 return &ppc64_elf_howto_raw
[i
];
2267 /* Set the howto pointer for a PowerPC ELF reloc. */
2270 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2271 Elf_Internal_Rela
*dst
)
2275 /* Initialize howto table if needed. */
2276 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2279 type
= ELF64_R_TYPE (dst
->r_info
);
2280 if (type
>= (sizeof (ppc64_elf_howto_table
)
2281 / sizeof (ppc64_elf_howto_table
[0])))
2283 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2285 type
= R_PPC64_NONE
;
2287 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2290 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2292 static bfd_reloc_status_type
2293 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2294 void *data
, asection
*input_section
,
2295 bfd
*output_bfd
, char **error_message
)
2297 /* If this is a relocatable link (output_bfd test tells us), just
2298 call the generic function. Any adjustment will be done at final
2300 if (output_bfd
!= NULL
)
2301 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2302 input_section
, output_bfd
, error_message
);
2304 /* Adjust the addend for sign extension of the low 16 bits.
2305 We won't actually be using the low 16 bits, so trashing them
2307 reloc_entry
->addend
+= 0x8000;
2308 return bfd_reloc_continue
;
2311 static bfd_reloc_status_type
2312 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2313 void *data
, asection
*input_section
,
2314 bfd
*output_bfd
, char **error_message
)
2316 if (output_bfd
!= NULL
)
2317 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2318 input_section
, output_bfd
, error_message
);
2320 if (strcmp (symbol
->section
->name
, ".opd") == 0
2321 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2323 bfd_vma dest
= opd_entry_value (symbol
->section
,
2324 symbol
->value
+ reloc_entry
->addend
,
2326 if (dest
!= (bfd_vma
) -1)
2327 reloc_entry
->addend
= dest
- (symbol
->value
2328 + symbol
->section
->output_section
->vma
2329 + symbol
->section
->output_offset
);
2331 return bfd_reloc_continue
;
2334 static bfd_reloc_status_type
2335 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2336 void *data
, asection
*input_section
,
2337 bfd
*output_bfd
, char **error_message
)
2340 enum elf_ppc64_reloc_type r_type
;
2341 bfd_size_type octets
;
2342 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2343 bfd_boolean is_power4
= FALSE
;
2345 /* If this is a relocatable link (output_bfd test tells us), just
2346 call the generic function. Any adjustment will be done at final
2348 if (output_bfd
!= NULL
)
2349 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2350 input_section
, output_bfd
, error_message
);
2352 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2353 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2354 insn
&= ~(0x01 << 21);
2355 r_type
= reloc_entry
->howto
->type
;
2356 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2357 || r_type
== R_PPC64_REL14_BRTAKEN
)
2358 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2362 /* Set 'a' bit. This is 0b00010 in BO field for branch
2363 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2364 for branch on CTR insns (BO == 1a00t or 1a01t). */
2365 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2367 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2377 if (!bfd_is_com_section (symbol
->section
))
2378 target
= symbol
->value
;
2379 target
+= symbol
->section
->output_section
->vma
;
2380 target
+= symbol
->section
->output_offset
;
2381 target
+= reloc_entry
->addend
;
2383 from
= (reloc_entry
->address
2384 + input_section
->output_offset
2385 + input_section
->output_section
->vma
);
2387 /* Invert 'y' bit if not the default. */
2388 if ((bfd_signed_vma
) (target
- from
) < 0)
2391 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2393 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2394 input_section
, output_bfd
, error_message
);
2397 static bfd_reloc_status_type
2398 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2399 void *data
, asection
*input_section
,
2400 bfd
*output_bfd
, char **error_message
)
2402 /* If this is a relocatable link (output_bfd test tells us), just
2403 call the generic function. Any adjustment will be done at final
2405 if (output_bfd
!= NULL
)
2406 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2407 input_section
, output_bfd
, error_message
);
2409 /* Subtract the symbol section base address. */
2410 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2411 return bfd_reloc_continue
;
2414 static bfd_reloc_status_type
2415 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2416 void *data
, asection
*input_section
,
2417 bfd
*output_bfd
, char **error_message
)
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2422 if (output_bfd
!= NULL
)
2423 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2424 input_section
, output_bfd
, error_message
);
2426 /* Subtract the symbol section base address. */
2427 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2429 /* Adjust the addend for sign extension of the low 16 bits. */
2430 reloc_entry
->addend
+= 0x8000;
2431 return bfd_reloc_continue
;
2434 static bfd_reloc_status_type
2435 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2436 void *data
, asection
*input_section
,
2437 bfd
*output_bfd
, char **error_message
)
2441 /* If this is a relocatable link (output_bfd test tells us), just
2442 call the generic function. Any adjustment will be done at final
2444 if (output_bfd
!= NULL
)
2445 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2446 input_section
, output_bfd
, error_message
);
2448 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2450 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2452 /* Subtract the TOC base address. */
2453 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2454 return bfd_reloc_continue
;
2457 static bfd_reloc_status_type
2458 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2459 void *data
, asection
*input_section
,
2460 bfd
*output_bfd
, char **error_message
)
2464 /* If this is a relocatable link (output_bfd test tells us), just
2465 call the generic function. Any adjustment will be done at final
2467 if (output_bfd
!= NULL
)
2468 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2469 input_section
, output_bfd
, error_message
);
2471 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2473 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2475 /* Subtract the TOC base address. */
2476 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2478 /* Adjust the addend for sign extension of the low 16 bits. */
2479 reloc_entry
->addend
+= 0x8000;
2480 return bfd_reloc_continue
;
2483 static bfd_reloc_status_type
2484 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2485 void *data
, asection
*input_section
,
2486 bfd
*output_bfd
, char **error_message
)
2489 bfd_size_type octets
;
2491 /* If this is a relocatable link (output_bfd test tells us), just
2492 call the generic function. Any adjustment will be done at final
2494 if (output_bfd
!= NULL
)
2495 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2496 input_section
, output_bfd
, error_message
);
2498 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2500 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2502 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2503 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2504 return bfd_reloc_ok
;
2507 static bfd_reloc_status_type
2508 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2509 void *data
, asection
*input_section
,
2510 bfd
*output_bfd
, char **error_message
)
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd
!= NULL
)
2516 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2517 input_section
, output_bfd
, error_message
);
2519 if (error_message
!= NULL
)
2521 static char buf
[60];
2522 sprintf (buf
, "generic linker can't handle %s",
2523 reloc_entry
->howto
->name
);
2524 *error_message
= buf
;
2526 return bfd_reloc_dangerous
;
2529 /* Track GOT entries needed for a given symbol. We might need more
2530 than one got entry per symbol. */
2533 struct got_entry
*next
;
2535 /* The symbol addend that we'll be placing in the GOT. */
2538 /* Unlike other ELF targets, we use separate GOT entries for the same
2539 symbol referenced from different input files. This is to support
2540 automatic multiple TOC/GOT sections, where the TOC base can vary
2541 from one input file to another. After partitioning into TOC groups
2542 we merge entries within the group.
2544 Point to the BFD owning this GOT entry. */
2547 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2548 TLS_TPREL or TLS_DTPREL for tls entries. */
2549 unsigned char tls_type
;
2551 /* Non-zero if got.ent points to real entry. */
2552 unsigned char is_indirect
;
2554 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2557 bfd_signed_vma refcount
;
2559 struct got_entry
*ent
;
2563 /* The same for PLT. */
2566 struct plt_entry
*next
;
2572 bfd_signed_vma refcount
;
2577 struct ppc64_elf_obj_tdata
2579 struct elf_obj_tdata elf
;
2581 /* Shortcuts to dynamic linker sections. */
2585 /* Used during garbage collection. We attach global symbols defined
2586 on removed .opd entries to this section so that the sym is removed. */
2587 asection
*deleted_section
;
2589 /* TLS local dynamic got entry handling. Support for multiple GOT
2590 sections means we potentially need one of these for each input bfd. */
2591 struct got_entry tlsld_got
;
2593 /* A copy of relocs before they are modified for --emit-relocs. */
2594 Elf_Internal_Rela
*opd_relocs
;
2596 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2597 the reloc to be in the range -32768 to 32767. */
2598 unsigned int has_small_toc_reloc
;
2601 #define ppc64_elf_tdata(bfd) \
2602 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2604 #define ppc64_tlsld_got(bfd) \
2605 (&ppc64_elf_tdata (bfd)->tlsld_got)
2607 #define is_ppc64_elf(bfd) \
2608 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2609 && elf_object_id (bfd) == PPC64_ELF_DATA)
2611 /* Override the generic function because we store some extras. */
2614 ppc64_elf_mkobject (bfd
*abfd
)
2616 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2620 /* Fix bad default arch selected for a 64 bit input bfd when the
2621 default is 32 bit. */
2624 ppc64_elf_object_p (bfd
*abfd
)
2626 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2628 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2630 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2632 /* Relies on arch after 32 bit default being 64 bit default. */
2633 abfd
->arch_info
= abfd
->arch_info
->next
;
2634 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2640 /* Support for core dump NOTE sections. */
2643 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2645 size_t offset
, size
;
2647 if (note
->descsz
!= 504)
2651 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2654 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2660 /* Make a ".reg/999" section. */
2661 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2662 size
, note
->descpos
+ offset
);
2666 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2668 if (note
->descsz
!= 136)
2671 elf_tdata (abfd
)->core_program
2672 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2673 elf_tdata (abfd
)->core_command
2674 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2680 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2693 va_start (ap
, note_type
);
2694 memset (data
, 0, 40);
2695 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2696 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2698 return elfcore_write_note (abfd
, buf
, bufsiz
,
2699 "CORE", note_type
, data
, sizeof (data
));
2710 va_start (ap
, note_type
);
2711 memset (data
, 0, 112);
2712 pid
= va_arg (ap
, long);
2713 bfd_put_32 (abfd
, pid
, data
+ 32);
2714 cursig
= va_arg (ap
, int);
2715 bfd_put_16 (abfd
, cursig
, data
+ 12);
2716 greg
= va_arg (ap
, const void *);
2717 memcpy (data
+ 112, greg
, 384);
2718 memset (data
+ 496, 0, 8);
2720 return elfcore_write_note (abfd
, buf
, bufsiz
,
2721 "CORE", note_type
, data
, sizeof (data
));
2726 /* Merge backend specific data from an object file to the output
2727 object file when linking. */
2730 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2732 /* Check if we have the same endianess. */
2733 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2734 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2735 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2739 if (bfd_big_endian (ibfd
))
2740 msg
= _("%B: compiled for a big endian system "
2741 "and target is little endian");
2743 msg
= _("%B: compiled for a little endian system "
2744 "and target is big endian");
2746 (*_bfd_error_handler
) (msg
, ibfd
);
2748 bfd_set_error (bfd_error_wrong_format
);
2755 /* Add extra PPC sections. */
2757 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2759 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2760 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2761 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2762 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2763 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2764 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2765 { NULL
, 0, 0, 0, 0 }
2768 enum _ppc64_sec_type
{
2774 struct _ppc64_elf_section_data
2776 struct bfd_elf_section_data elf
;
2780 /* An array with one entry for each opd function descriptor. */
2781 struct _opd_sec_data
2783 /* Points to the function code section for local opd entries. */
2784 asection
**func_sec
;
2786 /* After editing .opd, adjust references to opd local syms. */
2790 /* An array for toc sections, indexed by offset/8. */
2791 struct _toc_sec_data
2793 /* Specifies the relocation symbol index used at a given toc offset. */
2796 /* And the relocation addend. */
2801 enum _ppc64_sec_type sec_type
:2;
2803 /* Flag set when small branches are detected. Used to
2804 select suitable defaults for the stub group size. */
2805 unsigned int has_14bit_branch
:1;
2808 #define ppc64_elf_section_data(sec) \
2809 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2812 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2814 if (!sec
->used_by_bfd
)
2816 struct _ppc64_elf_section_data
*sdata
;
2817 bfd_size_type amt
= sizeof (*sdata
);
2819 sdata
= bfd_zalloc (abfd
, amt
);
2822 sec
->used_by_bfd
= sdata
;
2825 return _bfd_elf_new_section_hook (abfd
, sec
);
2828 static struct _opd_sec_data
*
2829 get_opd_info (asection
* sec
)
2832 && ppc64_elf_section_data (sec
) != NULL
2833 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2834 return &ppc64_elf_section_data (sec
)->u
.opd
;
2838 /* Parameters for the qsort hook. */
2839 static bfd_boolean synthetic_relocatable
;
2841 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2844 compare_symbols (const void *ap
, const void *bp
)
2846 const asymbol
*a
= * (const asymbol
**) ap
;
2847 const asymbol
*b
= * (const asymbol
**) bp
;
2849 /* Section symbols first. */
2850 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2852 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2855 /* then .opd symbols. */
2856 if (strcmp (a
->section
->name
, ".opd") == 0
2857 && strcmp (b
->section
->name
, ".opd") != 0)
2859 if (strcmp (a
->section
->name
, ".opd") != 0
2860 && strcmp (b
->section
->name
, ".opd") == 0)
2863 /* then other code symbols. */
2864 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2865 == (SEC_CODE
| SEC_ALLOC
)
2866 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2867 != (SEC_CODE
| SEC_ALLOC
))
2870 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2871 != (SEC_CODE
| SEC_ALLOC
)
2872 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2873 == (SEC_CODE
| SEC_ALLOC
))
2876 if (synthetic_relocatable
)
2878 if (a
->section
->id
< b
->section
->id
)
2881 if (a
->section
->id
> b
->section
->id
)
2885 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2888 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2891 /* For syms with the same value, prefer strong dynamic global function
2892 syms over other syms. */
2893 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2896 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2899 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2902 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2905 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2908 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2911 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2914 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2920 /* Search SYMS for a symbol of the given VALUE. */
2923 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2931 mid
= (lo
+ hi
) >> 1;
2932 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2934 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2944 mid
= (lo
+ hi
) >> 1;
2945 if (syms
[mid
]->section
->id
< id
)
2947 else if (syms
[mid
]->section
->id
> id
)
2949 else if (syms
[mid
]->value
< value
)
2951 else if (syms
[mid
]->value
> value
)
2961 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2963 bfd_vma vma
= *(bfd_vma
*) ptr
;
2964 return ((section
->flags
& SEC_ALLOC
) != 0
2965 && section
->vma
<= vma
2966 && vma
< section
->vma
+ section
->size
);
2969 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2970 entry syms. Also generate @plt symbols for the glink branch table. */
2973 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2974 long static_count
, asymbol
**static_syms
,
2975 long dyn_count
, asymbol
**dyn_syms
,
2982 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2984 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2989 opd
= bfd_get_section_by_name (abfd
, ".opd");
2993 symcount
= static_count
;
2995 symcount
+= dyn_count
;
2999 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3003 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3005 /* Use both symbol tables. */
3006 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3007 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3009 else if (!relocatable
&& static_count
== 0)
3010 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3012 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3014 synthetic_relocatable
= relocatable
;
3015 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3017 if (!relocatable
&& symcount
> 1)
3020 /* Trim duplicate syms, since we may have merged the normal and
3021 dynamic symbols. Actually, we only care about syms that have
3022 different values, so trim any with the same value. */
3023 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3024 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3025 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3026 syms
[j
++] = syms
[i
];
3031 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3035 for (; i
< symcount
; ++i
)
3036 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3037 != (SEC_CODE
| SEC_ALLOC
))
3038 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3042 for (; i
< symcount
; ++i
)
3043 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3047 for (; i
< symcount
; ++i
)
3048 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3052 for (; i
< symcount
; ++i
)
3053 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3054 != (SEC_CODE
| SEC_ALLOC
))
3062 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3067 if (opdsymend
== secsymend
)
3070 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3071 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3075 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3082 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3086 while (r
< opd
->relocation
+ relcount
3087 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3090 if (r
== opd
->relocation
+ relcount
)
3093 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3096 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3099 sym
= *r
->sym_ptr_ptr
;
3100 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3101 sym
->section
->id
, sym
->value
+ r
->addend
))
3104 size
+= sizeof (asymbol
);
3105 size
+= strlen (syms
[i
]->name
) + 2;
3109 s
= *ret
= bfd_malloc (size
);
3116 names
= (char *) (s
+ count
);
3118 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3122 while (r
< opd
->relocation
+ relcount
3123 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3126 if (r
== opd
->relocation
+ relcount
)
3129 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3132 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3135 sym
= *r
->sym_ptr_ptr
;
3136 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3137 sym
->section
->id
, sym
->value
+ r
->addend
))
3142 s
->flags
|= BSF_SYNTHETIC
;
3143 s
->section
= sym
->section
;
3144 s
->value
= sym
->value
+ r
->addend
;
3147 len
= strlen (syms
[i
]->name
);
3148 memcpy (names
, syms
[i
]->name
, len
+ 1);
3150 /* Have udata.p point back to the original symbol this
3151 synthetic symbol was derived from. */
3152 s
->udata
.p
= syms
[i
];
3159 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3163 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3164 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3167 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3171 free_contents_and_exit
:
3179 for (i
= secsymend
; i
< opdsymend
; ++i
)
3183 /* Ignore bogus symbols. */
3184 if (syms
[i
]->value
> opd
->size
- 8)
3187 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3188 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3191 size
+= sizeof (asymbol
);
3192 size
+= strlen (syms
[i
]->name
) + 2;
3196 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3198 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3200 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3202 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3204 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3205 goto free_contents_and_exit
;
3207 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3208 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3211 extdynend
= extdyn
+ dynamic
->size
;
3212 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3214 Elf_Internal_Dyn dyn
;
3215 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3217 if (dyn
.d_tag
== DT_NULL
)
3220 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3222 /* The first glink stub starts at offset 32; see comment in
3223 ppc64_elf_finish_dynamic_sections. */
3224 glink_vma
= dyn
.d_un
.d_val
+ 32;
3225 /* The .glink section usually does not survive the final
3226 link; search for the section (usually .text) where the
3227 glink stubs now reside. */
3228 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3239 /* Determine __glink trampoline by reading the relative branch
3240 from the first glink stub. */
3242 if (bfd_get_section_contents (abfd
, glink
, buf
,
3243 glink_vma
+ 4 - glink
->vma
, 4))
3245 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3247 if ((insn
& ~0x3fffffc) == 0)
3248 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3252 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3254 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3257 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3258 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3259 goto free_contents_and_exit
;
3261 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3262 size
+= plt_count
* sizeof (asymbol
);
3264 p
= relplt
->relocation
;
3265 for (i
= 0; i
< plt_count
; i
++, p
++)
3267 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3269 size
+= sizeof ("+0x") - 1 + 16;
3274 s
= *ret
= bfd_malloc (size
);
3276 goto free_contents_and_exit
;
3278 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3280 for (i
= secsymend
; i
< opdsymend
; ++i
)
3284 if (syms
[i
]->value
> opd
->size
- 8)
3287 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3288 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3292 asection
*sec
= abfd
->sections
;
3299 long mid
= (lo
+ hi
) >> 1;
3300 if (syms
[mid
]->section
->vma
< ent
)
3302 else if (syms
[mid
]->section
->vma
> ent
)
3306 sec
= syms
[mid
]->section
;
3311 if (lo
>= hi
&& lo
> codesecsym
)
3312 sec
= syms
[lo
- 1]->section
;
3314 for (; sec
!= NULL
; sec
= sec
->next
)
3318 if ((sec
->flags
& SEC_ALLOC
) == 0
3319 || (sec
->flags
& SEC_LOAD
) == 0)
3321 if ((sec
->flags
& SEC_CODE
) != 0)
3324 s
->flags
|= BSF_SYNTHETIC
;
3325 s
->value
= ent
- s
->section
->vma
;
3328 len
= strlen (syms
[i
]->name
);
3329 memcpy (names
, syms
[i
]->name
, len
+ 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s
->udata
.p
= syms
[i
];
3339 if (glink
!= NULL
&& relplt
!= NULL
)
3343 /* Add a symbol for the main glink trampoline. */
3344 memset (s
, 0, sizeof *s
);
3346 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3348 s
->value
= resolv_vma
- glink
->vma
;
3350 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3351 names
+= sizeof ("__glink_PLTresolve");
3356 /* FIXME: It would be very much nicer to put sym@plt on the
3357 stub rather than on the glink branch table entry. The
3358 objdump disassembler would then use a sensible symbol
3359 name on plt calls. The difficulty in doing so is
3360 a) finding the stubs, and,
3361 b) matching stubs against plt entries, and,
3362 c) there can be multiple stubs for a given plt entry.
3364 Solving (a) could be done by code scanning, but older
3365 ppc64 binaries used different stubs to current code.
3366 (b) is the tricky one since you need to known the toc
3367 pointer for at least one function that uses a pic stub to
3368 be able to calculate the plt address referenced.
3369 (c) means gdb would need to set multiple breakpoints (or
3370 find the glink branch itself) when setting breakpoints
3371 for pending shared library loads. */
3372 p
= relplt
->relocation
;
3373 for (i
= 0; i
< plt_count
; i
++, p
++)
3377 *s
= **p
->sym_ptr_ptr
;
3378 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3379 we are defining a symbol, ensure one of them is set. */
3380 if ((s
->flags
& BSF_LOCAL
) == 0)
3381 s
->flags
|= BSF_GLOBAL
;
3382 s
->flags
|= BSF_SYNTHETIC
;
3384 s
->value
= glink_vma
- glink
->vma
;
3387 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3388 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3392 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3393 names
+= sizeof ("+0x") - 1;
3394 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3395 names
+= strlen (names
);
3397 memcpy (names
, "@plt", sizeof ("@plt"));
3398 names
+= sizeof ("@plt");
3413 /* The following functions are specific to the ELF linker, while
3414 functions above are used generally. Those named ppc64_elf_* are
3415 called by the main ELF linker code. They appear in this file more
3416 or less in the order in which they are called. eg.
3417 ppc64_elf_check_relocs is called early in the link process,
3418 ppc64_elf_finish_dynamic_sections is one of the last functions
3421 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3422 functions have both a function code symbol and a function descriptor
3423 symbol. A call to foo in a relocatable object file looks like:
3430 The function definition in another object file might be:
3434 . .quad .TOC.@tocbase
3440 When the linker resolves the call during a static link, the branch
3441 unsurprisingly just goes to .foo and the .opd information is unused.
3442 If the function definition is in a shared library, things are a little
3443 different: The call goes via a plt call stub, the opd information gets
3444 copied to the plt, and the linker patches the nop.
3452 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3453 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3454 . std 2,40(1) # this is the general idea
3462 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3464 The "reloc ()" notation is supposed to indicate that the linker emits
3465 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3468 What are the difficulties here? Well, firstly, the relocations
3469 examined by the linker in check_relocs are against the function code
3470 sym .foo, while the dynamic relocation in the plt is emitted against
3471 the function descriptor symbol, foo. Somewhere along the line, we need
3472 to carefully copy dynamic link information from one symbol to the other.
3473 Secondly, the generic part of the elf linker will make .foo a dynamic
3474 symbol as is normal for most other backends. We need foo dynamic
3475 instead, at least for an application final link. However, when
3476 creating a shared library containing foo, we need to have both symbols
3477 dynamic so that references to .foo are satisfied during the early
3478 stages of linking. Otherwise the linker might decide to pull in a
3479 definition from some other object, eg. a static library.
3481 Update: As of August 2004, we support a new convention. Function
3482 calls may use the function descriptor symbol, ie. "bl foo". This
3483 behaves exactly as "bl .foo". */
3485 /* The linker needs to keep track of the number of relocs that it
3486 decides to copy as dynamic relocs in check_relocs for each symbol.
3487 This is so that it can later discard them if they are found to be
3488 unnecessary. We store the information in a field extending the
3489 regular ELF linker hash table. */
3491 struct ppc_dyn_relocs
3493 struct ppc_dyn_relocs
*next
;
3495 /* The input section of the reloc. */
3498 /* Total number of relocs copied for the input section. */
3499 bfd_size_type count
;
3501 /* Number of pc-relative relocs copied for the input section. */
3502 bfd_size_type pc_count
;
3505 /* Of those relocs that might be copied as dynamic relocs, this function
3506 selects those that must be copied when linking a shared library,
3507 even when the symbol is local. */
3510 must_be_dyn_reloc (struct bfd_link_info
*info
,
3511 enum elf_ppc64_reloc_type r_type
)
3523 case R_PPC64_TPREL16
:
3524 case R_PPC64_TPREL16_LO
:
3525 case R_PPC64_TPREL16_HI
:
3526 case R_PPC64_TPREL16_HA
:
3527 case R_PPC64_TPREL16_DS
:
3528 case R_PPC64_TPREL16_LO_DS
:
3529 case R_PPC64_TPREL16_HIGHER
:
3530 case R_PPC64_TPREL16_HIGHERA
:
3531 case R_PPC64_TPREL16_HIGHEST
:
3532 case R_PPC64_TPREL16_HIGHESTA
:
3533 case R_PPC64_TPREL64
:
3534 return !info
->executable
;
3538 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3539 copying dynamic variables from a shared lib into an app's dynbss
3540 section, and instead use a dynamic relocation to point into the
3541 shared lib. With code that gcc generates, it's vital that this be
3542 enabled; In the PowerPC64 ABI, the address of a function is actually
3543 the address of a function descriptor, which resides in the .opd
3544 section. gcc uses the descriptor directly rather than going via the
3545 GOT as some other ABI's do, which means that initialized function
3546 pointers must reference the descriptor. Thus, a function pointer
3547 initialized to the address of a function in a shared library will
3548 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3549 redefines the function descriptor symbol to point to the copy. This
3550 presents a problem as a plt entry for that function is also
3551 initialized from the function descriptor symbol and the copy reloc
3552 may not be initialized first. */
3553 #define ELIMINATE_COPY_RELOCS 1
3555 /* Section name for stubs is the associated section name plus this
3557 #define STUB_SUFFIX ".stub"
3560 ppc_stub_long_branch:
3561 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3562 destination, but a 24 bit branch in a stub section will reach.
3565 ppc_stub_plt_branch:
3566 Similar to the above, but a 24 bit branch in the stub section won't
3567 reach its destination.
3568 . addis %r12,%r2,xxx@toc@ha
3569 . ld %r11,xxx@toc@l(%r12)
3574 Used to call a function in a shared library. If it so happens that
3575 the plt entry referenced crosses a 64k boundary, then an extra
3576 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3577 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx+0@toc@l(%r12)
3581 . ld %r2,xxx+8@toc@l(%r12)
3582 . ld %r11,xxx+16@toc@l(%r12)
3585 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3586 code to adjust the value and save r2 to support multiple toc sections.
3587 A ppc_stub_long_branch with an r2 offset looks like:
3589 . addis %r2,%r2,off@ha
3590 . addi %r2,%r2,off@l
3593 A ppc_stub_plt_branch with an r2 offset looks like:
3595 . addis %r12,%r2,xxx@toc@ha
3596 . ld %r11,xxx@toc@l(%r12)
3597 . addis %r2,%r2,off@ha
3598 . addi %r2,%r2,off@l
3602 In cases where the "addis" instruction would add zero, the "addis" is
3603 omitted and following instructions modified slightly in some cases.
3606 enum ppc_stub_type
{
3608 ppc_stub_long_branch
,
3609 ppc_stub_long_branch_r2off
,
3610 ppc_stub_plt_branch
,
3611 ppc_stub_plt_branch_r2off
,
3615 struct ppc_stub_hash_entry
{
3617 /* Base hash table entry structure. */
3618 struct bfd_hash_entry root
;
3620 enum ppc_stub_type stub_type
;
3622 /* The stub section. */
3625 /* Offset within stub_sec of the beginning of this stub. */
3626 bfd_vma stub_offset
;
3628 /* Given the symbol's value and its section we can determine its final
3629 value when building the stubs (so the stub knows where to jump. */
3630 bfd_vma target_value
;
3631 asection
*target_section
;
3633 /* The symbol table entry, if any, that this was derived from. */
3634 struct ppc_link_hash_entry
*h
;
3635 struct plt_entry
*plt_ent
;
3637 /* And the reloc addend that this was derived from. */
3640 /* Where this stub is being called from, or, in the case of combined
3641 stub sections, the first input section in the group. */
3645 struct ppc_branch_hash_entry
{
3647 /* Base hash table entry structure. */
3648 struct bfd_hash_entry root
;
3650 /* Offset within branch lookup table. */
3651 unsigned int offset
;
3653 /* Generation marker. */
3657 struct ppc_link_hash_entry
3659 struct elf_link_hash_entry elf
;
3662 /* A pointer to the most recently used stub hash entry against this
3664 struct ppc_stub_hash_entry
*stub_cache
;
3666 /* A pointer to the next symbol starting with a '.' */
3667 struct ppc_link_hash_entry
*next_dot_sym
;
3670 /* Track dynamic relocs copied for this symbol. */
3671 struct ppc_dyn_relocs
*dyn_relocs
;
3673 /* Link between function code and descriptor symbols. */
3674 struct ppc_link_hash_entry
*oh
;
3676 /* Flag function code and descriptor symbols. */
3677 unsigned int is_func
:1;
3678 unsigned int is_func_descriptor
:1;
3679 unsigned int fake
:1;
3681 /* Whether global opd/toc sym has been adjusted or not.
3682 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3683 should be set for all globals defined in any opd/toc section. */
3684 unsigned int adjust_done
:1;
3686 /* Set if we twiddled this symbol to weak at some stage. */
3687 unsigned int was_undefined
:1;
3689 /* Contexts in which symbol is used in the GOT (or TOC).
3690 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3691 corresponding relocs are encountered during check_relocs.
3692 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3693 indicate the corresponding GOT entry type is not needed.
3694 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3695 a TPREL one. We use a separate flag rather than setting TPREL
3696 just for convenience in distinguishing the two cases. */
3697 #define TLS_GD 1 /* GD reloc. */
3698 #define TLS_LD 2 /* LD reloc. */
3699 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3700 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3701 #define TLS_TLS 16 /* Any TLS reloc. */
3702 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3703 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3704 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3705 unsigned char tls_mask
;
3708 /* ppc64 ELF linker hash table. */
3710 struct ppc_link_hash_table
3712 struct elf_link_hash_table elf
;
3714 /* The stub hash table. */
3715 struct bfd_hash_table stub_hash_table
;
3717 /* Another hash table for plt_branch stubs. */
3718 struct bfd_hash_table branch_hash_table
;
3720 /* Linker stub bfd. */
3723 /* Linker call-backs. */
3724 asection
* (*add_stub_section
) (const char *, asection
*);
3725 void (*layout_sections_again
) (void);
3727 /* Array to keep track of which stub sections have been created, and
3728 information on stub grouping. */
3730 /* This is the section to which stubs in the group will be attached. */
3732 /* The stub section. */
3734 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3738 /* Temp used when calculating TOC pointers. */
3741 asection
*toc_first_sec
;
3743 /* Highest input section id. */
3746 /* Highest output section index. */
3749 /* Used when adding symbols. */
3750 struct ppc_link_hash_entry
*dot_syms
;
3752 /* List of input sections for each output section. */
3753 asection
**input_list
;
3755 /* Short-cuts to get to dynamic linker sections. */
3768 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3769 struct ppc_link_hash_entry
*tls_get_addr
;
3770 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3772 /* The size of reliplt used by got entry relocs. */
3773 bfd_size_type got_reli_size
;
3776 unsigned long stub_count
[ppc_stub_plt_call
];
3778 /* Number of stubs against global syms. */
3779 unsigned long stub_globals
;
3781 /* Set if we should emit symbols for stubs. */
3782 unsigned int emit_stub_syms
:1;
3784 /* Set if __tls_get_addr optimization should not be done. */
3785 unsigned int no_tls_get_addr_opt
:1;
3787 /* Support for multiple toc sections. */
3788 unsigned int do_multi_toc
:1;
3789 unsigned int multi_toc_needed
:1;
3790 unsigned int second_toc_pass
:1;
3793 unsigned int stub_error
:1;
3795 /* Temp used by ppc64_elf_process_dot_syms. */
3796 unsigned int twiddled_syms
:1;
3798 /* Incremented every time we size stubs. */
3799 unsigned int stub_iteration
;
3801 /* Small local sym cache. */
3802 struct sym_cache sym_cache
;
3805 /* Rename some of the generic section flags to better document how they
3808 /* Nonzero if this section has TLS related relocations. */
3809 #define has_tls_reloc sec_flg0
3811 /* Nonzero if this section has a call to __tls_get_addr. */
3812 #define has_tls_get_addr_call sec_flg1
3814 /* Nonzero if this section has any toc or got relocs. */
3815 #define has_toc_reloc sec_flg2
3817 /* Nonzero if this section has a call to another section that uses
3819 #define makes_toc_func_call sec_flg3
3821 /* Recursion protection when determining above flag. */
3822 #define call_check_in_progress sec_flg4
3824 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3826 #define ppc_hash_table(p) \
3827 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3828 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3830 #define ppc_stub_hash_lookup(table, string, create, copy) \
3831 ((struct ppc_stub_hash_entry *) \
3832 bfd_hash_lookup ((table), (string), (create), (copy)))
3834 #define ppc_branch_hash_lookup(table, string, create, copy) \
3835 ((struct ppc_branch_hash_entry *) \
3836 bfd_hash_lookup ((table), (string), (create), (copy)))
3838 /* Create an entry in the stub hash table. */
3840 static struct bfd_hash_entry
*
3841 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3842 struct bfd_hash_table
*table
,
3845 /* Allocate the structure if it has not already been allocated by a
3849 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3854 /* Call the allocation method of the superclass. */
3855 entry
= bfd_hash_newfunc (entry
, table
, string
);
3858 struct ppc_stub_hash_entry
*eh
;
3860 /* Initialize the local fields. */
3861 eh
= (struct ppc_stub_hash_entry
*) entry
;
3862 eh
->stub_type
= ppc_stub_none
;
3863 eh
->stub_sec
= NULL
;
3864 eh
->stub_offset
= 0;
3865 eh
->target_value
= 0;
3866 eh
->target_section
= NULL
;
3874 /* Create an entry in the branch hash table. */
3876 static struct bfd_hash_entry
*
3877 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3878 struct bfd_hash_table
*table
,
3881 /* Allocate the structure if it has not already been allocated by a
3885 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3890 /* Call the allocation method of the superclass. */
3891 entry
= bfd_hash_newfunc (entry
, table
, string
);
3894 struct ppc_branch_hash_entry
*eh
;
3896 /* Initialize the local fields. */
3897 eh
= (struct ppc_branch_hash_entry
*) entry
;
3905 /* Create an entry in a ppc64 ELF linker hash table. */
3907 static struct bfd_hash_entry
*
3908 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3909 struct bfd_hash_table
*table
,
3912 /* Allocate the structure if it has not already been allocated by a
3916 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3921 /* Call the allocation method of the superclass. */
3922 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3925 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3927 memset (&eh
->u
.stub_cache
, 0,
3928 (sizeof (struct ppc_link_hash_entry
)
3929 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3931 /* When making function calls, old ABI code references function entry
3932 points (dot symbols), while new ABI code references the function
3933 descriptor symbol. We need to make any combination of reference and
3934 definition work together, without breaking archive linking.
3936 For a defined function "foo" and an undefined call to "bar":
3937 An old object defines "foo" and ".foo", references ".bar" (possibly
3939 A new object defines "foo" and references "bar".
3941 A new object thus has no problem with its undefined symbols being
3942 satisfied by definitions in an old object. On the other hand, the
3943 old object won't have ".bar" satisfied by a new object.
3945 Keep a list of newly added dot-symbols. */
3947 if (string
[0] == '.')
3949 struct ppc_link_hash_table
*htab
;
3951 htab
= (struct ppc_link_hash_table
*) table
;
3952 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3953 htab
->dot_syms
= eh
;
3960 /* Create a ppc64 ELF linker hash table. */
3962 static struct bfd_link_hash_table
*
3963 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3965 struct ppc_link_hash_table
*htab
;
3966 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3968 htab
= bfd_zmalloc (amt
);
3972 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3973 sizeof (struct ppc_link_hash_entry
),
3980 /* Init the stub hash table too. */
3981 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3982 sizeof (struct ppc_stub_hash_entry
)))
3985 /* And the branch hash table. */
3986 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3987 sizeof (struct ppc_branch_hash_entry
)))
3990 /* Initializing two fields of the union is just cosmetic. We really
3991 only care about glist, but when compiled on a 32-bit host the
3992 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3993 debugger inspection of these fields look nicer. */
3994 htab
->elf
.init_got_refcount
.refcount
= 0;
3995 htab
->elf
.init_got_refcount
.glist
= NULL
;
3996 htab
->elf
.init_plt_refcount
.refcount
= 0;
3997 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3998 htab
->elf
.init_got_offset
.offset
= 0;
3999 htab
->elf
.init_got_offset
.glist
= NULL
;
4000 htab
->elf
.init_plt_offset
.offset
= 0;
4001 htab
->elf
.init_plt_offset
.glist
= NULL
;
4003 return &htab
->elf
.root
;
4006 /* Free the derived linker hash table. */
4009 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4011 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
4013 bfd_hash_table_free (&ret
->stub_hash_table
);
4014 bfd_hash_table_free (&ret
->branch_hash_table
);
4015 _bfd_generic_link_hash_table_free (hash
);
4018 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4021 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4023 struct ppc_link_hash_table
*htab
;
4025 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4027 /* Always hook our dynamic sections into the first bfd, which is the
4028 linker created stub bfd. This ensures that the GOT header is at
4029 the start of the output TOC section. */
4030 htab
= ppc_hash_table (info
);
4033 htab
->stub_bfd
= abfd
;
4034 htab
->elf
.dynobj
= abfd
;
4037 /* Build a name for an entry in the stub hash table. */
4040 ppc_stub_name (const asection
*input_section
,
4041 const asection
*sym_sec
,
4042 const struct ppc_link_hash_entry
*h
,
4043 const Elf_Internal_Rela
*rel
)
4048 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4049 offsets from a sym as a branch target? In fact, we could
4050 probably assume the addend is always zero. */
4051 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4055 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4056 stub_name
= bfd_malloc (len
);
4057 if (stub_name
== NULL
)
4060 sprintf (stub_name
, "%08x.%s+%x",
4061 input_section
->id
& 0xffffffff,
4062 h
->elf
.root
.root
.string
,
4063 (int) rel
->r_addend
& 0xffffffff);
4067 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4068 stub_name
= bfd_malloc (len
);
4069 if (stub_name
== NULL
)
4072 sprintf (stub_name
, "%08x.%x:%x+%x",
4073 input_section
->id
& 0xffffffff,
4074 sym_sec
->id
& 0xffffffff,
4075 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4076 (int) rel
->r_addend
& 0xffffffff);
4078 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4079 stub_name
[len
- 2] = 0;
4083 /* Look up an entry in the stub hash. Stub entries are cached because
4084 creating the stub name takes a bit of time. */
4086 static struct ppc_stub_hash_entry
*
4087 ppc_get_stub_entry (const asection
*input_section
,
4088 const asection
*sym_sec
,
4089 struct ppc_link_hash_entry
*h
,
4090 const Elf_Internal_Rela
*rel
,
4091 struct ppc_link_hash_table
*htab
)
4093 struct ppc_stub_hash_entry
*stub_entry
;
4094 const asection
*id_sec
;
4096 /* If this input section is part of a group of sections sharing one
4097 stub section, then use the id of the first section in the group.
4098 Stub names need to include a section id, as there may well be
4099 more than one stub used to reach say, printf, and we need to
4100 distinguish between them. */
4101 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4103 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4104 && h
->u
.stub_cache
->h
== h
4105 && h
->u
.stub_cache
->id_sec
== id_sec
)
4107 stub_entry
= h
->u
.stub_cache
;
4113 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4114 if (stub_name
== NULL
)
4117 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4118 stub_name
, FALSE
, FALSE
);
4120 h
->u
.stub_cache
= stub_entry
;
4128 /* Add a new stub entry to the stub hash. Not all fields of the new
4129 stub entry are initialised. */
4131 static struct ppc_stub_hash_entry
*
4132 ppc_add_stub (const char *stub_name
,
4134 struct ppc_link_hash_table
*htab
)
4138 struct ppc_stub_hash_entry
*stub_entry
;
4140 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4141 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4142 if (stub_sec
== NULL
)
4144 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4145 if (stub_sec
== NULL
)
4151 namelen
= strlen (link_sec
->name
);
4152 len
= namelen
+ sizeof (STUB_SUFFIX
);
4153 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4157 memcpy (s_name
, link_sec
->name
, namelen
);
4158 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4159 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4160 if (stub_sec
== NULL
)
4162 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4164 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4167 /* Enter this entry into the linker stub hash table. */
4168 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4170 if (stub_entry
== NULL
)
4172 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4173 section
->owner
, stub_name
);
4177 stub_entry
->stub_sec
= stub_sec
;
4178 stub_entry
->stub_offset
= 0;
4179 stub_entry
->id_sec
= link_sec
;
4183 /* Create sections for linker generated code. */
4186 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4188 struct ppc_link_hash_table
*htab
;
4191 htab
= ppc_hash_table (info
);
4195 /* Create .sfpr for code to save and restore fp regs. */
4196 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4197 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4198 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4200 if (htab
->sfpr
== NULL
4201 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4204 /* Create .glink for lazy dynamic linking support. */
4205 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4207 if (htab
->glink
== NULL
4208 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4211 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4212 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4213 if (htab
->iplt
== NULL
4214 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4217 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4218 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4219 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4222 if (htab
->reliplt
== NULL
4223 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4226 /* Create branch lookup table for plt_branch stubs. */
4227 flags
= (SEC_ALLOC
| SEC_LOAD
4228 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4229 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4231 if (htab
->brlt
== NULL
4232 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4238 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4239 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4240 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4243 if (htab
->relbrlt
== NULL
4244 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4250 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4251 not already done. */
4254 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4256 asection
*got
, *relgot
;
4258 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4260 if (!is_ppc64_elf (abfd
))
4267 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4270 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4275 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4276 | SEC_LINKER_CREATED
);
4278 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4280 || !bfd_set_section_alignment (abfd
, got
, 3))
4283 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4284 flags
| SEC_READONLY
);
4286 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4289 ppc64_elf_tdata (abfd
)->got
= got
;
4290 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4294 /* Create the dynamic sections, and set up shortcuts. */
4297 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4299 struct ppc_link_hash_table
*htab
;
4301 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4304 htab
= ppc_hash_table (info
);
4309 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4310 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4311 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4312 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4314 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4316 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4317 || (!info
->shared
&& !htab
->relbss
))
4323 /* Follow indirect and warning symbol links. */
4325 static inline struct bfd_link_hash_entry
*
4326 follow_link (struct bfd_link_hash_entry
*h
)
4328 while (h
->type
== bfd_link_hash_indirect
4329 || h
->type
== bfd_link_hash_warning
)
4334 static inline struct elf_link_hash_entry
*
4335 elf_follow_link (struct elf_link_hash_entry
*h
)
4337 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4340 static inline struct ppc_link_hash_entry
*
4341 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4343 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4346 /* Merge PLT info on FROM with that on TO. */
4349 move_plt_plist (struct ppc_link_hash_entry
*from
,
4350 struct ppc_link_hash_entry
*to
)
4352 if (from
->elf
.plt
.plist
!= NULL
)
4354 if (to
->elf
.plt
.plist
!= NULL
)
4356 struct plt_entry
**entp
;
4357 struct plt_entry
*ent
;
4359 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4361 struct plt_entry
*dent
;
4363 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4364 if (dent
->addend
== ent
->addend
)
4366 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4373 *entp
= to
->elf
.plt
.plist
;
4376 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4377 from
->elf
.plt
.plist
= NULL
;
4381 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4384 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4385 struct elf_link_hash_entry
*dir
,
4386 struct elf_link_hash_entry
*ind
)
4388 struct ppc_link_hash_entry
*edir
, *eind
;
4390 edir
= (struct ppc_link_hash_entry
*) dir
;
4391 eind
= (struct ppc_link_hash_entry
*) ind
;
4393 /* Copy over any dynamic relocs we may have on the indirect sym. */
4394 if (eind
->dyn_relocs
!= NULL
)
4396 if (edir
->dyn_relocs
!= NULL
)
4398 struct ppc_dyn_relocs
**pp
;
4399 struct ppc_dyn_relocs
*p
;
4401 /* Add reloc counts against the indirect sym to the direct sym
4402 list. Merge any entries against the same section. */
4403 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4405 struct ppc_dyn_relocs
*q
;
4407 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4408 if (q
->sec
== p
->sec
)
4410 q
->pc_count
+= p
->pc_count
;
4411 q
->count
+= p
->count
;
4418 *pp
= edir
->dyn_relocs
;
4421 edir
->dyn_relocs
= eind
->dyn_relocs
;
4422 eind
->dyn_relocs
= NULL
;
4425 edir
->is_func
|= eind
->is_func
;
4426 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4427 edir
->tls_mask
|= eind
->tls_mask
;
4428 if (eind
->oh
!= NULL
)
4429 edir
->oh
= ppc_follow_link (eind
->oh
);
4431 /* If called to transfer flags for a weakdef during processing
4432 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4433 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4434 if (!(ELIMINATE_COPY_RELOCS
4435 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4436 && edir
->elf
.dynamic_adjusted
))
4437 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4439 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4440 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4441 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4442 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4444 /* If we were called to copy over info for a weak sym, that's all. */
4445 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4448 /* Copy over got entries that we may have already seen to the
4449 symbol which just became indirect. */
4450 if (eind
->elf
.got
.glist
!= NULL
)
4452 if (edir
->elf
.got
.glist
!= NULL
)
4454 struct got_entry
**entp
;
4455 struct got_entry
*ent
;
4457 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4459 struct got_entry
*dent
;
4461 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4462 if (dent
->addend
== ent
->addend
4463 && dent
->owner
== ent
->owner
4464 && dent
->tls_type
== ent
->tls_type
)
4466 dent
->got
.refcount
+= ent
->got
.refcount
;
4473 *entp
= edir
->elf
.got
.glist
;
4476 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4477 eind
->elf
.got
.glist
= NULL
;
4480 /* And plt entries. */
4481 move_plt_plist (eind
, edir
);
4483 if (eind
->elf
.dynindx
!= -1)
4485 if (edir
->elf
.dynindx
!= -1)
4486 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4487 edir
->elf
.dynstr_index
);
4488 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4489 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4490 eind
->elf
.dynindx
= -1;
4491 eind
->elf
.dynstr_index
= 0;
4495 /* Find the function descriptor hash entry from the given function code
4496 hash entry FH. Link the entries via their OH fields. */
4498 static struct ppc_link_hash_entry
*
4499 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4501 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4505 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4507 fdh
= (struct ppc_link_hash_entry
*)
4508 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4512 fdh
->is_func_descriptor
= 1;
4518 return ppc_follow_link (fdh
);
4521 /* Make a fake function descriptor sym for the code sym FH. */
4523 static struct ppc_link_hash_entry
*
4524 make_fdh (struct bfd_link_info
*info
,
4525 struct ppc_link_hash_entry
*fh
)
4529 struct bfd_link_hash_entry
*bh
;
4530 struct ppc_link_hash_entry
*fdh
;
4532 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4533 newsym
= bfd_make_empty_symbol (abfd
);
4534 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4535 newsym
->section
= bfd_und_section_ptr
;
4537 newsym
->flags
= BSF_WEAK
;
4540 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4541 newsym
->flags
, newsym
->section
,
4542 newsym
->value
, NULL
, FALSE
, FALSE
,
4546 fdh
= (struct ppc_link_hash_entry
*) bh
;
4547 fdh
->elf
.non_elf
= 0;
4549 fdh
->is_func_descriptor
= 1;
4556 /* Fix function descriptor symbols defined in .opd sections to be
4560 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
4561 struct bfd_link_info
*info
,
4562 Elf_Internal_Sym
*isym
,
4563 const char **name ATTRIBUTE_UNUSED
,
4564 flagword
*flags ATTRIBUTE_UNUSED
,
4566 bfd_vma
*value ATTRIBUTE_UNUSED
)
4568 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4569 elf_tdata (info
->output_bfd
)->has_ifunc_symbols
= TRUE
;
4570 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4572 else if (*sec
!= NULL
4573 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4574 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4579 /* This function makes an old ABI object reference to ".bar" cause the
4580 inclusion of a new ABI object archive that defines "bar".
4581 NAME is a symbol defined in an archive. Return a symbol in the hash
4582 table that might be satisfied by the archive symbols. */
4584 static struct elf_link_hash_entry
*
4585 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4586 struct bfd_link_info
*info
,
4589 struct elf_link_hash_entry
*h
;
4593 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4595 /* Don't return this sym if it is a fake function descriptor
4596 created by add_symbol_adjust. */
4597 && !(h
->root
.type
== bfd_link_hash_undefweak
4598 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4604 len
= strlen (name
);
4605 dot_name
= bfd_alloc (abfd
, len
+ 2);
4606 if (dot_name
== NULL
)
4607 return (struct elf_link_hash_entry
*) 0 - 1;
4609 memcpy (dot_name
+ 1, name
, len
+ 1);
4610 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4611 bfd_release (abfd
, dot_name
);
4615 /* This function satisfies all old ABI object references to ".bar" if a
4616 new ABI object defines "bar". Well, at least, undefined dot symbols
4617 are made weak. This stops later archive searches from including an
4618 object if we already have a function descriptor definition. It also
4619 prevents the linker complaining about undefined symbols.
4620 We also check and correct mismatched symbol visibility here. The
4621 most restrictive visibility of the function descriptor and the
4622 function entry symbol is used. */
4625 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4627 struct ppc_link_hash_table
*htab
;
4628 struct ppc_link_hash_entry
*fdh
;
4630 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4633 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4634 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4636 if (eh
->elf
.root
.root
.string
[0] != '.')
4639 htab
= ppc_hash_table (info
);
4643 fdh
= lookup_fdh (eh
, htab
);
4646 if (!info
->relocatable
4647 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4648 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4649 && eh
->elf
.ref_regular
)
4651 /* Make an undefweak function descriptor sym, which is enough to
4652 pull in an --as-needed shared lib, but won't cause link
4653 errors. Archives are handled elsewhere. */
4654 fdh
= make_fdh (info
, eh
);
4657 fdh
->elf
.ref_regular
= 1;
4662 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4663 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4664 if (entry_vis
< descr_vis
)
4665 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4666 else if (entry_vis
> descr_vis
)
4667 eh
->elf
.other
+= descr_vis
- entry_vis
;
4669 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4670 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4671 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4673 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4674 eh
->was_undefined
= 1;
4675 htab
->twiddled_syms
= 1;
4682 /* Process list of dot-symbols we made in link_hash_newfunc. */
4685 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4687 struct ppc_link_hash_table
*htab
;
4688 struct ppc_link_hash_entry
**p
, *eh
;
4690 if (!is_ppc64_elf (info
->output_bfd
))
4692 htab
= ppc_hash_table (info
);
4696 if (is_ppc64_elf (ibfd
))
4698 p
= &htab
->dot_syms
;
4699 while ((eh
= *p
) != NULL
)
4702 if (!add_symbol_adjust (eh
, info
))
4704 p
= &eh
->u
.next_dot_sym
;
4708 /* Clear the list for non-ppc64 input files. */
4709 p
= &htab
->dot_syms
;
4710 while ((eh
= *p
) != NULL
)
4713 p
= &eh
->u
.next_dot_sym
;
4716 /* We need to fix the undefs list for any syms we have twiddled to
4718 if (htab
->twiddled_syms
)
4720 bfd_link_repair_undef_list (&htab
->elf
.root
);
4721 htab
->twiddled_syms
= 0;
4726 /* Undo hash table changes when an --as-needed input file is determined
4727 not to be needed. */
4730 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4731 struct bfd_link_info
*info
)
4733 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4738 htab
->dot_syms
= NULL
;
4742 static struct plt_entry
**
4743 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4744 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4746 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4747 struct plt_entry
**local_plt
;
4748 unsigned char *local_got_tls_masks
;
4750 if (local_got_ents
== NULL
)
4752 bfd_size_type size
= symtab_hdr
->sh_info
;
4754 size
*= (sizeof (*local_got_ents
)
4755 + sizeof (*local_plt
)
4756 + sizeof (*local_got_tls_masks
));
4757 local_got_ents
= bfd_zalloc (abfd
, size
);
4758 if (local_got_ents
== NULL
)
4760 elf_local_got_ents (abfd
) = local_got_ents
;
4763 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4765 struct got_entry
*ent
;
4767 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4768 if (ent
->addend
== r_addend
4769 && ent
->owner
== abfd
4770 && ent
->tls_type
== tls_type
)
4774 bfd_size_type amt
= sizeof (*ent
);
4775 ent
= bfd_alloc (abfd
, amt
);
4778 ent
->next
= local_got_ents
[r_symndx
];
4779 ent
->addend
= r_addend
;
4781 ent
->tls_type
= tls_type
;
4782 ent
->is_indirect
= FALSE
;
4783 ent
->got
.refcount
= 0;
4784 local_got_ents
[r_symndx
] = ent
;
4786 ent
->got
.refcount
+= 1;
4789 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4790 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4791 local_got_tls_masks
[r_symndx
] |= tls_type
;
4793 return local_plt
+ r_symndx
;
4797 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4799 struct plt_entry
*ent
;
4801 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4802 if (ent
->addend
== addend
)
4806 bfd_size_type amt
= sizeof (*ent
);
4807 ent
= bfd_alloc (abfd
, amt
);
4811 ent
->addend
= addend
;
4812 ent
->plt
.refcount
= 0;
4815 ent
->plt
.refcount
+= 1;
4820 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4822 return (r_type
== R_PPC64_REL24
4823 || r_type
== R_PPC64_REL14
4824 || r_type
== R_PPC64_REL14_BRTAKEN
4825 || r_type
== R_PPC64_REL14_BRNTAKEN
4826 || r_type
== R_PPC64_ADDR24
4827 || r_type
== R_PPC64_ADDR14
4828 || r_type
== R_PPC64_ADDR14_BRTAKEN
4829 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4832 /* Look through the relocs for a section during the first phase, and
4833 calculate needed space in the global offset table, procedure
4834 linkage table, and dynamic reloc sections. */
4837 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4838 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4840 struct ppc_link_hash_table
*htab
;
4841 Elf_Internal_Shdr
*symtab_hdr
;
4842 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4843 const Elf_Internal_Rela
*rel
;
4844 const Elf_Internal_Rela
*rel_end
;
4846 asection
**opd_sym_map
;
4847 struct elf_link_hash_entry
*tga
, *dottga
;
4849 if (info
->relocatable
)
4852 /* Don't do anything special with non-loaded, non-alloced sections.
4853 In particular, any relocs in such sections should not affect GOT
4854 and PLT reference counting (ie. we don't allow them to create GOT
4855 or PLT entries), there's no possibility or desire to optimize TLS
4856 relocs, and there's not much point in propagating relocs to shared
4857 libs that the dynamic linker won't relocate. */
4858 if ((sec
->flags
& SEC_ALLOC
) == 0)
4861 BFD_ASSERT (is_ppc64_elf (abfd
));
4863 htab
= ppc_hash_table (info
);
4867 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4868 FALSE
, FALSE
, TRUE
);
4869 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4870 FALSE
, FALSE
, TRUE
);
4871 symtab_hdr
= &elf_symtab_hdr (abfd
);
4873 sym_hashes
= elf_sym_hashes (abfd
);
4874 sym_hashes_end
= (sym_hashes
4875 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4876 - symtab_hdr
->sh_info
);
4880 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4882 /* Garbage collection needs some extra help with .opd sections.
4883 We don't want to necessarily keep everything referenced by
4884 relocs in .opd, as that would keep all functions. Instead,
4885 if we reference an .opd symbol (a function descriptor), we
4886 want to keep the function code symbol's section. This is
4887 easy for global symbols, but for local syms we need to keep
4888 information about the associated function section. */
4891 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4892 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4893 if (opd_sym_map
== NULL
)
4895 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4896 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4897 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4900 if (htab
->sfpr
== NULL
4901 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4904 rel_end
= relocs
+ sec
->reloc_count
;
4905 for (rel
= relocs
; rel
< rel_end
; rel
++)
4907 unsigned long r_symndx
;
4908 struct elf_link_hash_entry
*h
;
4909 enum elf_ppc64_reloc_type r_type
;
4911 struct _ppc64_elf_section_data
*ppc64_sec
;
4912 struct plt_entry
**ifunc
;
4914 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4915 if (r_symndx
< symtab_hdr
->sh_info
)
4919 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4920 h
= elf_follow_link (h
);
4927 if (h
->type
== STT_GNU_IFUNC
)
4930 ifunc
= &h
->plt
.plist
;
4935 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4940 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4942 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4943 rel
->r_addend
, PLT_IFUNC
);
4948 r_type
= ELF64_R_TYPE (rel
->r_info
);
4949 if (is_branch_reloc (r_type
))
4951 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4954 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4955 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4956 /* We have a new-style __tls_get_addr call with a marker
4960 /* Mark this section as having an old-style call. */
4961 sec
->has_tls_get_addr_call
= 1;
4964 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4966 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
4974 /* These special tls relocs tie a call to __tls_get_addr with
4975 its parameter symbol. */
4978 case R_PPC64_GOT_TLSLD16
:
4979 case R_PPC64_GOT_TLSLD16_LO
:
4980 case R_PPC64_GOT_TLSLD16_HI
:
4981 case R_PPC64_GOT_TLSLD16_HA
:
4982 tls_type
= TLS_TLS
| TLS_LD
;
4985 case R_PPC64_GOT_TLSGD16
:
4986 case R_PPC64_GOT_TLSGD16_LO
:
4987 case R_PPC64_GOT_TLSGD16_HI
:
4988 case R_PPC64_GOT_TLSGD16_HA
:
4989 tls_type
= TLS_TLS
| TLS_GD
;
4992 case R_PPC64_GOT_TPREL16_DS
:
4993 case R_PPC64_GOT_TPREL16_LO_DS
:
4994 case R_PPC64_GOT_TPREL16_HI
:
4995 case R_PPC64_GOT_TPREL16_HA
:
4996 if (!info
->executable
)
4997 info
->flags
|= DF_STATIC_TLS
;
4998 tls_type
= TLS_TLS
| TLS_TPREL
;
5001 case R_PPC64_GOT_DTPREL16_DS
:
5002 case R_PPC64_GOT_DTPREL16_LO_DS
:
5003 case R_PPC64_GOT_DTPREL16_HI
:
5004 case R_PPC64_GOT_DTPREL16_HA
:
5005 tls_type
= TLS_TLS
| TLS_DTPREL
;
5007 sec
->has_tls_reloc
= 1;
5011 case R_PPC64_GOT16_DS
:
5012 case R_PPC64_GOT16_HA
:
5013 case R_PPC64_GOT16_HI
:
5014 case R_PPC64_GOT16_LO
:
5015 case R_PPC64_GOT16_LO_DS
:
5016 /* This symbol requires a global offset table entry. */
5017 sec
->has_toc_reloc
= 1;
5018 if (r_type
== R_PPC64_GOT_TLSLD16
5019 || r_type
== R_PPC64_GOT_TLSGD16
5020 || r_type
== R_PPC64_GOT_TPREL16_DS
5021 || r_type
== R_PPC64_GOT_DTPREL16_DS
5022 || r_type
== R_PPC64_GOT16
5023 || r_type
== R_PPC64_GOT16_DS
)
5025 htab
->do_multi_toc
= 1;
5026 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5029 if (ppc64_elf_tdata (abfd
)->got
== NULL
5030 && !create_got_section (abfd
, info
))
5035 struct ppc_link_hash_entry
*eh
;
5036 struct got_entry
*ent
;
5038 eh
= (struct ppc_link_hash_entry
*) h
;
5039 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5040 if (ent
->addend
== rel
->r_addend
5041 && ent
->owner
== abfd
5042 && ent
->tls_type
== tls_type
)
5046 bfd_size_type amt
= sizeof (*ent
);
5047 ent
= bfd_alloc (abfd
, amt
);
5050 ent
->next
= eh
->elf
.got
.glist
;
5051 ent
->addend
= rel
->r_addend
;
5053 ent
->tls_type
= tls_type
;
5054 ent
->is_indirect
= FALSE
;
5055 ent
->got
.refcount
= 0;
5056 eh
->elf
.got
.glist
= ent
;
5058 ent
->got
.refcount
+= 1;
5059 eh
->tls_mask
|= tls_type
;
5062 /* This is a global offset table entry for a local symbol. */
5063 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5064 rel
->r_addend
, tls_type
))
5068 case R_PPC64_PLT16_HA
:
5069 case R_PPC64_PLT16_HI
:
5070 case R_PPC64_PLT16_LO
:
5073 /* This symbol requires a procedure linkage table entry. We
5074 actually build the entry in adjust_dynamic_symbol,
5075 because this might be a case of linking PIC code without
5076 linking in any dynamic objects, in which case we don't
5077 need to generate a procedure linkage table after all. */
5080 /* It does not make sense to have a procedure linkage
5081 table entry for a local symbol. */
5082 bfd_set_error (bfd_error_bad_value
);
5087 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5090 if (h
->root
.root
.string
[0] == '.'
5091 && h
->root
.root
.string
[1] != '\0')
5092 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5096 /* The following relocations don't need to propagate the
5097 relocation if linking a shared object since they are
5098 section relative. */
5099 case R_PPC64_SECTOFF
:
5100 case R_PPC64_SECTOFF_LO
:
5101 case R_PPC64_SECTOFF_HI
:
5102 case R_PPC64_SECTOFF_HA
:
5103 case R_PPC64_SECTOFF_DS
:
5104 case R_PPC64_SECTOFF_LO_DS
:
5105 case R_PPC64_DTPREL16
:
5106 case R_PPC64_DTPREL16_LO
:
5107 case R_PPC64_DTPREL16_HI
:
5108 case R_PPC64_DTPREL16_HA
:
5109 case R_PPC64_DTPREL16_DS
:
5110 case R_PPC64_DTPREL16_LO_DS
:
5111 case R_PPC64_DTPREL16_HIGHER
:
5112 case R_PPC64_DTPREL16_HIGHERA
:
5113 case R_PPC64_DTPREL16_HIGHEST
:
5114 case R_PPC64_DTPREL16_HIGHESTA
:
5119 case R_PPC64_REL16_LO
:
5120 case R_PPC64_REL16_HI
:
5121 case R_PPC64_REL16_HA
:
5125 case R_PPC64_TOC16_DS
:
5126 htab
->do_multi_toc
= 1;
5127 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5128 case R_PPC64_TOC16_LO
:
5129 case R_PPC64_TOC16_HI
:
5130 case R_PPC64_TOC16_HA
:
5131 case R_PPC64_TOC16_LO_DS
:
5132 sec
->has_toc_reloc
= 1;
5135 /* This relocation describes the C++ object vtable hierarchy.
5136 Reconstruct it for later use during GC. */
5137 case R_PPC64_GNU_VTINHERIT
:
5138 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5142 /* This relocation describes which C++ vtable entries are actually
5143 used. Record for later use during GC. */
5144 case R_PPC64_GNU_VTENTRY
:
5145 BFD_ASSERT (h
!= NULL
);
5147 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5152 case R_PPC64_REL14_BRTAKEN
:
5153 case R_PPC64_REL14_BRNTAKEN
:
5155 asection
*dest
= NULL
;
5157 /* Heuristic: If jumping outside our section, chances are
5158 we are going to need a stub. */
5161 /* If the sym is weak it may be overridden later, so
5162 don't assume we know where a weak sym lives. */
5163 if (h
->root
.type
== bfd_link_hash_defined
)
5164 dest
= h
->root
.u
.def
.section
;
5168 Elf_Internal_Sym
*isym
;
5170 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5175 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5179 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5184 if (h
!= NULL
&& ifunc
== NULL
)
5186 /* We may need a .plt entry if the function this reloc
5187 refers to is in a shared lib. */
5188 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5191 if (h
->root
.root
.string
[0] == '.'
5192 && h
->root
.root
.string
[1] != '\0')
5193 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5194 if (h
== tga
|| h
== dottga
)
5195 sec
->has_tls_reloc
= 1;
5199 case R_PPC64_TPREL64
:
5200 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5201 if (!info
->executable
)
5202 info
->flags
|= DF_STATIC_TLS
;
5205 case R_PPC64_DTPMOD64
:
5206 if (rel
+ 1 < rel_end
5207 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5208 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5209 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5211 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5214 case R_PPC64_DTPREL64
:
5215 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5217 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5218 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5219 /* This is the second reloc of a dtpmod, dtprel pair.
5220 Don't mark with TLS_DTPREL. */
5224 sec
->has_tls_reloc
= 1;
5227 struct ppc_link_hash_entry
*eh
;
5228 eh
= (struct ppc_link_hash_entry
*) h
;
5229 eh
->tls_mask
|= tls_type
;
5232 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5233 rel
->r_addend
, tls_type
))
5236 ppc64_sec
= ppc64_elf_section_data (sec
);
5237 if (ppc64_sec
->sec_type
!= sec_toc
)
5241 /* One extra to simplify get_tls_mask. */
5242 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5243 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5244 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5246 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5247 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5248 if (ppc64_sec
->u
.toc
.add
== NULL
)
5250 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5251 ppc64_sec
->sec_type
= sec_toc
;
5253 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5254 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5255 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5257 /* Mark the second slot of a GD or LD entry.
5258 -1 to indicate GD and -2 to indicate LD. */
5259 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5260 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5261 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5262 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5265 case R_PPC64_TPREL16
:
5266 case R_PPC64_TPREL16_LO
:
5267 case R_PPC64_TPREL16_HI
:
5268 case R_PPC64_TPREL16_HA
:
5269 case R_PPC64_TPREL16_DS
:
5270 case R_PPC64_TPREL16_LO_DS
:
5271 case R_PPC64_TPREL16_HIGHER
:
5272 case R_PPC64_TPREL16_HIGHERA
:
5273 case R_PPC64_TPREL16_HIGHEST
:
5274 case R_PPC64_TPREL16_HIGHESTA
:
5277 if (!info
->executable
)
5278 info
->flags
|= DF_STATIC_TLS
;
5283 case R_PPC64_ADDR64
:
5284 if (opd_sym_map
!= NULL
5285 && rel
+ 1 < rel_end
5286 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5290 if (h
->root
.root
.string
[0] == '.'
5291 && h
->root
.root
.string
[1] != 0
5292 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5295 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5300 Elf_Internal_Sym
*isym
;
5302 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5307 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5308 if (s
!= NULL
&& s
!= sec
)
5309 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5317 case R_PPC64_ADDR14
:
5318 case R_PPC64_ADDR14_BRNTAKEN
:
5319 case R_PPC64_ADDR14_BRTAKEN
:
5320 case R_PPC64_ADDR16
:
5321 case R_PPC64_ADDR16_DS
:
5322 case R_PPC64_ADDR16_HA
:
5323 case R_PPC64_ADDR16_HI
:
5324 case R_PPC64_ADDR16_HIGHER
:
5325 case R_PPC64_ADDR16_HIGHERA
:
5326 case R_PPC64_ADDR16_HIGHEST
:
5327 case R_PPC64_ADDR16_HIGHESTA
:
5328 case R_PPC64_ADDR16_LO
:
5329 case R_PPC64_ADDR16_LO_DS
:
5330 case R_PPC64_ADDR24
:
5331 case R_PPC64_ADDR32
:
5332 case R_PPC64_UADDR16
:
5333 case R_PPC64_UADDR32
:
5334 case R_PPC64_UADDR64
:
5336 if (h
!= NULL
&& !info
->shared
)
5337 /* We may need a copy reloc. */
5340 /* Don't propagate .opd relocs. */
5341 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5344 /* If we are creating a shared library, and this is a reloc
5345 against a global symbol, or a non PC relative reloc
5346 against a local symbol, then we need to copy the reloc
5347 into the shared library. However, if we are linking with
5348 -Bsymbolic, we do not need to copy a reloc against a
5349 global symbol which is defined in an object we are
5350 including in the link (i.e., DEF_REGULAR is set). At
5351 this point we have not seen all the input files, so it is
5352 possible that DEF_REGULAR is not set now but will be set
5353 later (it is never cleared). In case of a weak definition,
5354 DEF_REGULAR may be cleared later by a strong definition in
5355 a shared library. We account for that possibility below by
5356 storing information in the dyn_relocs field of the hash
5357 table entry. A similar situation occurs when creating
5358 shared libraries and symbol visibility changes render the
5361 If on the other hand, we are creating an executable, we
5362 may need to keep relocations for symbols satisfied by a
5363 dynamic library if we manage to avoid copy relocs for the
5367 && (must_be_dyn_reloc (info
, r_type
)
5369 && (! info
->symbolic
5370 || h
->root
.type
== bfd_link_hash_defweak
5371 || !h
->def_regular
))))
5372 || (ELIMINATE_COPY_RELOCS
5375 && (h
->root
.type
== bfd_link_hash_defweak
5376 || !h
->def_regular
))
5380 struct ppc_dyn_relocs
*p
;
5381 struct ppc_dyn_relocs
**head
;
5383 /* We must copy these reloc types into the output file.
5384 Create a reloc section in dynobj and make room for
5388 sreloc
= _bfd_elf_make_dynamic_reloc_section
5389 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5395 /* If this is a global symbol, we count the number of
5396 relocations we need for this symbol. */
5399 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5403 /* Track dynamic relocs needed for local syms too.
5404 We really need local syms available to do this
5408 Elf_Internal_Sym
*isym
;
5410 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5415 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5419 vpp
= &elf_section_data (s
)->local_dynrel
;
5420 head
= (struct ppc_dyn_relocs
**) vpp
;
5424 if (p
== NULL
|| p
->sec
!= sec
)
5426 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5437 if (!must_be_dyn_reloc (info
, r_type
))
5450 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5451 of the code entry point, and its section. */
5454 opd_entry_value (asection
*opd_sec
,
5456 asection
**code_sec
,
5459 bfd
*opd_bfd
= opd_sec
->owner
;
5460 Elf_Internal_Rela
*relocs
;
5461 Elf_Internal_Rela
*lo
, *hi
, *look
;
5464 /* No relocs implies we are linking a --just-symbols object. */
5465 if (opd_sec
->reloc_count
== 0)
5467 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
5468 return (bfd_vma
) -1;
5470 if (code_sec
!= NULL
)
5472 asection
*sec
, *likely
= NULL
;
5473 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5475 && (sec
->flags
& SEC_LOAD
) != 0
5476 && (sec
->flags
& SEC_ALLOC
) != 0)
5481 if (code_off
!= NULL
)
5482 *code_off
= val
- likely
->vma
;
5488 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5490 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5492 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5494 /* Go find the opd reloc at the sym address. */
5496 BFD_ASSERT (lo
!= NULL
);
5497 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5501 look
= lo
+ (hi
- lo
) / 2;
5502 if (look
->r_offset
< offset
)
5504 else if (look
->r_offset
> offset
)
5508 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5510 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5511 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5513 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5516 if (symndx
< symtab_hdr
->sh_info
)
5518 Elf_Internal_Sym
*sym
;
5520 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5523 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5524 symtab_hdr
->sh_info
,
5525 0, NULL
, NULL
, NULL
);
5528 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5532 val
= sym
->st_value
;
5533 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5534 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5538 struct elf_link_hash_entry
**sym_hashes
;
5539 struct elf_link_hash_entry
*rh
;
5541 sym_hashes
= elf_sym_hashes (opd_bfd
);
5542 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5543 rh
= elf_follow_link (rh
);
5544 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5545 || rh
->root
.type
== bfd_link_hash_defweak
);
5546 val
= rh
->root
.u
.def
.value
;
5547 sec
= rh
->root
.u
.def
.section
;
5549 val
+= look
->r_addend
;
5550 if (code_off
!= NULL
)
5552 if (code_sec
!= NULL
)
5554 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5555 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5564 /* If FDH is a function descriptor symbol, return the associated code
5565 entry symbol if it is defined. Return NULL otherwise. */
5567 static struct ppc_link_hash_entry
*
5568 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5570 if (fdh
->is_func_descriptor
)
5572 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5573 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5574 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5580 /* If FH is a function code entry symbol, return the associated
5581 function descriptor symbol if it is defined. Return NULL otherwise. */
5583 static struct ppc_link_hash_entry
*
5584 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5587 && fh
->oh
->is_func_descriptor
)
5589 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5590 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5591 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5597 /* Mark all our entry sym sections, both opd and code section. */
5600 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5602 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5603 struct bfd_sym_chain
*sym
;
5608 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5610 struct ppc_link_hash_entry
*eh
, *fh
;
5613 eh
= (struct ppc_link_hash_entry
*)
5614 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5617 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5618 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5621 fh
= defined_code_entry (eh
);
5624 sec
= fh
->elf
.root
.u
.def
.section
;
5625 sec
->flags
|= SEC_KEEP
;
5627 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5628 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5629 eh
->elf
.root
.u
.def
.value
,
5630 &sec
, NULL
) != (bfd_vma
) -1)
5631 sec
->flags
|= SEC_KEEP
;
5633 sec
= eh
->elf
.root
.u
.def
.section
;
5634 sec
->flags
|= SEC_KEEP
;
5638 /* Mark sections containing dynamically referenced symbols. When
5639 building shared libraries, we must assume that any visible symbol is
5643 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5645 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5646 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5647 struct ppc_link_hash_entry
*fdh
;
5649 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5650 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5652 /* Dynamic linking info is on the func descriptor sym. */
5653 fdh
= defined_func_desc (eh
);
5657 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5658 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5659 && (eh
->elf
.ref_dynamic
5660 || (!info
->executable
5661 && eh
->elf
.def_regular
5662 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5663 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5666 struct ppc_link_hash_entry
*fh
;
5668 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5670 /* Function descriptor syms cause the associated
5671 function code sym section to be marked. */
5672 fh
= defined_code_entry (eh
);
5675 code_sec
= fh
->elf
.root
.u
.def
.section
;
5676 code_sec
->flags
|= SEC_KEEP
;
5678 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5679 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5680 eh
->elf
.root
.u
.def
.value
,
5681 &code_sec
, NULL
) != (bfd_vma
) -1)
5682 code_sec
->flags
|= SEC_KEEP
;
5688 /* Return the section that should be marked against GC for a given
5692 ppc64_elf_gc_mark_hook (asection
*sec
,
5693 struct bfd_link_info
*info
,
5694 Elf_Internal_Rela
*rel
,
5695 struct elf_link_hash_entry
*h
,
5696 Elf_Internal_Sym
*sym
)
5700 /* Syms return NULL if we're marking .opd, so we avoid marking all
5701 function sections, as all functions are referenced in .opd. */
5703 if (get_opd_info (sec
) != NULL
)
5708 enum elf_ppc64_reloc_type r_type
;
5709 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5711 r_type
= ELF64_R_TYPE (rel
->r_info
);
5714 case R_PPC64_GNU_VTINHERIT
:
5715 case R_PPC64_GNU_VTENTRY
:
5719 switch (h
->root
.type
)
5721 case bfd_link_hash_defined
:
5722 case bfd_link_hash_defweak
:
5723 eh
= (struct ppc_link_hash_entry
*) h
;
5724 fdh
= defined_func_desc (eh
);
5728 /* Function descriptor syms cause the associated
5729 function code sym section to be marked. */
5730 fh
= defined_code_entry (eh
);
5733 /* They also mark their opd section. */
5734 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5736 rsec
= fh
->elf
.root
.u
.def
.section
;
5738 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5739 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5740 eh
->elf
.root
.u
.def
.value
,
5741 &rsec
, NULL
) != (bfd_vma
) -1)
5742 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5744 rsec
= h
->root
.u
.def
.section
;
5747 case bfd_link_hash_common
:
5748 rsec
= h
->root
.u
.c
.p
->section
;
5752 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5758 struct _opd_sec_data
*opd
;
5760 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5761 opd
= get_opd_info (rsec
);
5762 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5766 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5773 /* Update the .got, .plt. and dynamic reloc reference counts for the
5774 section being removed. */
5777 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5778 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5780 struct ppc_link_hash_table
*htab
;
5781 Elf_Internal_Shdr
*symtab_hdr
;
5782 struct elf_link_hash_entry
**sym_hashes
;
5783 struct got_entry
**local_got_ents
;
5784 const Elf_Internal_Rela
*rel
, *relend
;
5786 if (info
->relocatable
)
5789 if ((sec
->flags
& SEC_ALLOC
) == 0)
5792 elf_section_data (sec
)->local_dynrel
= NULL
;
5794 htab
= ppc_hash_table (info
);
5798 symtab_hdr
= &elf_symtab_hdr (abfd
);
5799 sym_hashes
= elf_sym_hashes (abfd
);
5800 local_got_ents
= elf_local_got_ents (abfd
);
5802 relend
= relocs
+ sec
->reloc_count
;
5803 for (rel
= relocs
; rel
< relend
; rel
++)
5805 unsigned long r_symndx
;
5806 enum elf_ppc64_reloc_type r_type
;
5807 struct elf_link_hash_entry
*h
= NULL
;
5808 unsigned char tls_type
= 0;
5810 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5811 r_type
= ELF64_R_TYPE (rel
->r_info
);
5812 if (r_symndx
>= symtab_hdr
->sh_info
)
5814 struct ppc_link_hash_entry
*eh
;
5815 struct ppc_dyn_relocs
**pp
;
5816 struct ppc_dyn_relocs
*p
;
5818 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5819 h
= elf_follow_link (h
);
5820 eh
= (struct ppc_link_hash_entry
*) h
;
5822 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5825 /* Everything must go for SEC. */
5831 if (is_branch_reloc (r_type
))
5833 struct plt_entry
**ifunc
= NULL
;
5836 if (h
->type
== STT_GNU_IFUNC
)
5837 ifunc
= &h
->plt
.plist
;
5839 else if (local_got_ents
!= NULL
)
5841 struct plt_entry
**local_plt
= (struct plt_entry
**)
5842 (local_got_ents
+ symtab_hdr
->sh_info
);
5843 unsigned char *local_got_tls_masks
= (unsigned char *)
5844 (local_plt
+ symtab_hdr
->sh_info
);
5845 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5846 ifunc
= local_plt
+ r_symndx
;
5850 struct plt_entry
*ent
;
5852 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5853 if (ent
->addend
== rel
->r_addend
)
5857 if (ent
->plt
.refcount
> 0)
5858 ent
->plt
.refcount
-= 1;
5865 case R_PPC64_GOT_TLSLD16
:
5866 case R_PPC64_GOT_TLSLD16_LO
:
5867 case R_PPC64_GOT_TLSLD16_HI
:
5868 case R_PPC64_GOT_TLSLD16_HA
:
5869 tls_type
= TLS_TLS
| TLS_LD
;
5872 case R_PPC64_GOT_TLSGD16
:
5873 case R_PPC64_GOT_TLSGD16_LO
:
5874 case R_PPC64_GOT_TLSGD16_HI
:
5875 case R_PPC64_GOT_TLSGD16_HA
:
5876 tls_type
= TLS_TLS
| TLS_GD
;
5879 case R_PPC64_GOT_TPREL16_DS
:
5880 case R_PPC64_GOT_TPREL16_LO_DS
:
5881 case R_PPC64_GOT_TPREL16_HI
:
5882 case R_PPC64_GOT_TPREL16_HA
:
5883 tls_type
= TLS_TLS
| TLS_TPREL
;
5886 case R_PPC64_GOT_DTPREL16_DS
:
5887 case R_PPC64_GOT_DTPREL16_LO_DS
:
5888 case R_PPC64_GOT_DTPREL16_HI
:
5889 case R_PPC64_GOT_DTPREL16_HA
:
5890 tls_type
= TLS_TLS
| TLS_DTPREL
;
5894 case R_PPC64_GOT16_DS
:
5895 case R_PPC64_GOT16_HA
:
5896 case R_PPC64_GOT16_HI
:
5897 case R_PPC64_GOT16_LO
:
5898 case R_PPC64_GOT16_LO_DS
:
5901 struct got_entry
*ent
;
5906 ent
= local_got_ents
[r_symndx
];
5908 for (; ent
!= NULL
; ent
= ent
->next
)
5909 if (ent
->addend
== rel
->r_addend
5910 && ent
->owner
== abfd
5911 && ent
->tls_type
== tls_type
)
5915 if (ent
->got
.refcount
> 0)
5916 ent
->got
.refcount
-= 1;
5920 case R_PPC64_PLT16_HA
:
5921 case R_PPC64_PLT16_HI
:
5922 case R_PPC64_PLT16_LO
:
5926 case R_PPC64_REL14_BRNTAKEN
:
5927 case R_PPC64_REL14_BRTAKEN
:
5931 struct plt_entry
*ent
;
5933 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5934 if (ent
->addend
== rel
->r_addend
)
5936 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5937 ent
->plt
.refcount
-= 1;
5948 /* The maximum size of .sfpr. */
5949 #define SFPR_MAX (218*4)
5951 struct sfpr_def_parms
5953 const char name
[12];
5954 unsigned char lo
, hi
;
5955 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5956 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5959 /* Auto-generate _save*, _rest* functions in .sfpr. */
5962 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5964 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5966 size_t len
= strlen (parm
->name
);
5967 bfd_boolean writing
= FALSE
;
5973 memcpy (sym
, parm
->name
, len
);
5976 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5978 struct elf_link_hash_entry
*h
;
5980 sym
[len
+ 0] = i
/ 10 + '0';
5981 sym
[len
+ 1] = i
% 10 + '0';
5982 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5986 h
->root
.type
= bfd_link_hash_defined
;
5987 h
->root
.u
.def
.section
= htab
->sfpr
;
5988 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5991 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5993 if (htab
->sfpr
->contents
== NULL
)
5995 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5996 if (htab
->sfpr
->contents
== NULL
)
6002 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6004 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6006 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6007 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6015 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6017 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6022 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6024 p
= savegpr0 (abfd
, p
, r
);
6025 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6027 bfd_put_32 (abfd
, BLR
, p
);
6032 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6034 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6039 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6041 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6043 p
= restgpr0 (abfd
, p
, r
);
6044 bfd_put_32 (abfd
, MTLR_R0
, p
);
6048 p
= restgpr0 (abfd
, p
, 30);
6049 p
= restgpr0 (abfd
, p
, 31);
6051 bfd_put_32 (abfd
, BLR
, p
);
6056 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6058 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6063 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6065 p
= savegpr1 (abfd
, p
, r
);
6066 bfd_put_32 (abfd
, BLR
, p
);
6071 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6073 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6078 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6080 p
= restgpr1 (abfd
, p
, r
);
6081 bfd_put_32 (abfd
, BLR
, p
);
6086 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6088 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6093 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6095 p
= savefpr (abfd
, p
, r
);
6096 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6098 bfd_put_32 (abfd
, BLR
, p
);
6103 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6105 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6110 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6112 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6114 p
= restfpr (abfd
, p
, r
);
6115 bfd_put_32 (abfd
, MTLR_R0
, p
);
6119 p
= restfpr (abfd
, p
, 30);
6120 p
= restfpr (abfd
, p
, 31);
6122 bfd_put_32 (abfd
, BLR
, p
);
6127 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6129 p
= savefpr (abfd
, p
, r
);
6130 bfd_put_32 (abfd
, BLR
, p
);
6135 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6137 p
= restfpr (abfd
, p
, r
);
6138 bfd_put_32 (abfd
, BLR
, p
);
6143 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6145 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6147 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6152 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6154 p
= savevr (abfd
, p
, r
);
6155 bfd_put_32 (abfd
, BLR
, p
);
6160 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6162 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6164 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6169 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6171 p
= restvr (abfd
, p
, r
);
6172 bfd_put_32 (abfd
, BLR
, p
);
6176 /* Called via elf_link_hash_traverse to transfer dynamic linking
6177 information on function code symbol entries to their corresponding
6178 function descriptor symbol entries. */
6181 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6183 struct bfd_link_info
*info
;
6184 struct ppc_link_hash_table
*htab
;
6185 struct plt_entry
*ent
;
6186 struct ppc_link_hash_entry
*fh
;
6187 struct ppc_link_hash_entry
*fdh
;
6188 bfd_boolean force_local
;
6190 fh
= (struct ppc_link_hash_entry
*) h
;
6191 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6194 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
6195 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
6198 htab
= ppc_hash_table (info
);
6202 /* Resolve undefined references to dot-symbols as the value
6203 in the function descriptor, if we have one in a regular object.
6204 This is to satisfy cases like ".quad .foo". Calls to functions
6205 in dynamic objects are handled elsewhere. */
6206 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6207 && fh
->was_undefined
6208 && (fdh
= defined_func_desc (fh
)) != NULL
6209 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6210 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6211 fdh
->elf
.root
.u
.def
.value
,
6212 &fh
->elf
.root
.u
.def
.section
,
6213 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6215 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6216 fh
->elf
.forced_local
= 1;
6217 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6218 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6221 /* If this is a function code symbol, transfer dynamic linking
6222 information to the function descriptor symbol. */
6226 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6227 if (ent
->plt
.refcount
> 0)
6230 || fh
->elf
.root
.root
.string
[0] != '.'
6231 || fh
->elf
.root
.root
.string
[1] == '\0')
6234 /* Find the corresponding function descriptor symbol. Create it
6235 as undefined if necessary. */
6237 fdh
= lookup_fdh (fh
, htab
);
6239 && !info
->executable
6240 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6241 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6243 fdh
= make_fdh (info
, fh
);
6248 /* Fake function descriptors are made undefweak. If the function
6249 code symbol is strong undefined, make the fake sym the same.
6250 If the function code symbol is defined, then force the fake
6251 descriptor local; We can't support overriding of symbols in a
6252 shared library on a fake descriptor. */
6256 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6258 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6260 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6261 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6263 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6264 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6266 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6271 && !fdh
->elf
.forced_local
6272 && (!info
->executable
6273 || fdh
->elf
.def_dynamic
6274 || fdh
->elf
.ref_dynamic
6275 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6276 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6278 if (fdh
->elf
.dynindx
== -1)
6279 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6281 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6282 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6283 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6284 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6285 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6287 move_plt_plist (fh
, fdh
);
6288 fdh
->elf
.needs_plt
= 1;
6290 fdh
->is_func_descriptor
= 1;
6295 /* Now that the info is on the function descriptor, clear the
6296 function code sym info. Any function code syms for which we
6297 don't have a definition in a regular file, we force local.
6298 This prevents a shared library from exporting syms that have
6299 been imported from another library. Function code syms that
6300 are really in the library we must leave global to prevent the
6301 linker dragging in a definition from a static library. */
6302 force_local
= (!fh
->elf
.def_regular
6304 || !fdh
->elf
.def_regular
6305 || fdh
->elf
.forced_local
);
6306 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6311 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6312 this hook to a) provide some gcc support functions, and b) transfer
6313 dynamic linking information gathered so far on function code symbol
6314 entries, to their corresponding function descriptor symbol entries. */
6317 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6318 struct bfd_link_info
*info
)
6320 struct ppc_link_hash_table
*htab
;
6322 const struct sfpr_def_parms funcs
[] =
6324 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6325 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6326 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6327 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6328 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6329 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6330 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6331 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6332 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6333 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6334 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6335 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6338 htab
= ppc_hash_table (info
);
6342 if (htab
->sfpr
== NULL
)
6343 /* We don't have any relocs. */
6346 /* Provide any missing _save* and _rest* functions. */
6347 htab
->sfpr
->size
= 0;
6348 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6349 if (!sfpr_define (info
, &funcs
[i
]))
6352 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6354 if (htab
->sfpr
->size
== 0)
6355 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6360 /* Adjust a symbol defined by a dynamic object and referenced by a
6361 regular object. The current definition is in some section of the
6362 dynamic object, but we're not including those sections. We have to
6363 change the definition to something the rest of the link can
6367 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6368 struct elf_link_hash_entry
*h
)
6370 struct ppc_link_hash_table
*htab
;
6373 htab
= ppc_hash_table (info
);
6377 /* Deal with function syms. */
6378 if (h
->type
== STT_FUNC
6379 || h
->type
== STT_GNU_IFUNC
6382 /* Clear procedure linkage table information for any symbol that
6383 won't need a .plt entry. */
6384 struct plt_entry
*ent
;
6385 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6386 if (ent
->plt
.refcount
> 0)
6389 || (h
->type
!= STT_GNU_IFUNC
6390 && (SYMBOL_CALLS_LOCAL (info
, h
)
6391 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6392 && h
->root
.type
== bfd_link_hash_undefweak
))))
6394 h
->plt
.plist
= NULL
;
6399 h
->plt
.plist
= NULL
;
6401 /* If this is a weak symbol, and there is a real definition, the
6402 processor independent code will have arranged for us to see the
6403 real definition first, and we can just use the same value. */
6404 if (h
->u
.weakdef
!= NULL
)
6406 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6407 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6408 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6409 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6410 if (ELIMINATE_COPY_RELOCS
)
6411 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6415 /* If we are creating a shared library, we must presume that the
6416 only references to the symbol are via the global offset table.
6417 For such cases we need not do anything here; the relocations will
6418 be handled correctly by relocate_section. */
6422 /* If there are no references to this symbol that do not use the
6423 GOT, we don't need to generate a copy reloc. */
6424 if (!h
->non_got_ref
)
6427 /* Don't generate a copy reloc for symbols defined in the executable. */
6428 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6431 if (ELIMINATE_COPY_RELOCS
)
6433 struct ppc_link_hash_entry
* eh
;
6434 struct ppc_dyn_relocs
*p
;
6436 eh
= (struct ppc_link_hash_entry
*) h
;
6437 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6439 s
= p
->sec
->output_section
;
6440 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6444 /* If we didn't find any dynamic relocs in read-only sections, then
6445 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6453 if (h
->plt
.plist
!= NULL
)
6455 /* We should never get here, but unfortunately there are versions
6456 of gcc out there that improperly (for this ABI) put initialized
6457 function pointers, vtable refs and suchlike in read-only
6458 sections. Allow them to proceed, but warn that this might
6459 break at runtime. */
6460 (*_bfd_error_handler
)
6461 (_("copy reloc against `%s' requires lazy plt linking; "
6462 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6463 h
->root
.root
.string
);
6466 /* This is a reference to a symbol defined by a dynamic object which
6467 is not a function. */
6471 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6472 h
->root
.root
.string
);
6476 /* We must allocate the symbol in our .dynbss section, which will
6477 become part of the .bss section of the executable. There will be
6478 an entry for this symbol in the .dynsym section. The dynamic
6479 object will contain position independent code, so all references
6480 from the dynamic object to this symbol will go through the global
6481 offset table. The dynamic linker will use the .dynsym entry to
6482 determine the address it must put in the global offset table, so
6483 both the dynamic object and the regular object will refer to the
6484 same memory location for the variable. */
6486 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6487 to copy the initial value out of the dynamic object and into the
6488 runtime process image. We need to remember the offset into the
6489 .rela.bss section we are going to use. */
6490 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6492 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6498 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6501 /* If given a function descriptor symbol, hide both the function code
6502 sym and the descriptor. */
6504 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6505 struct elf_link_hash_entry
*h
,
6506 bfd_boolean force_local
)
6508 struct ppc_link_hash_entry
*eh
;
6509 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6511 eh
= (struct ppc_link_hash_entry
*) h
;
6512 if (eh
->is_func_descriptor
)
6514 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6519 struct ppc_link_hash_table
*htab
;
6522 /* We aren't supposed to use alloca in BFD because on
6523 systems which do not have alloca the version in libiberty
6524 calls xmalloc, which might cause the program to crash
6525 when it runs out of memory. This function doesn't have a
6526 return status, so there's no way to gracefully return an
6527 error. So cheat. We know that string[-1] can be safely
6528 accessed; It's either a string in an ELF string table,
6529 or allocated in an objalloc structure. */
6531 p
= eh
->elf
.root
.root
.string
- 1;
6534 htab
= ppc_hash_table (info
);
6538 fh
= (struct ppc_link_hash_entry
*)
6539 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6542 /* Unfortunately, if it so happens that the string we were
6543 looking for was allocated immediately before this string,
6544 then we overwrote the string terminator. That's the only
6545 reason the lookup should fail. */
6548 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6549 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6551 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6552 fh
= (struct ppc_link_hash_entry
*)
6553 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6562 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6567 get_sym_h (struct elf_link_hash_entry
**hp
,
6568 Elf_Internal_Sym
**symp
,
6570 unsigned char **tls_maskp
,
6571 Elf_Internal_Sym
**locsymsp
,
6572 unsigned long r_symndx
,
6575 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6577 if (r_symndx
>= symtab_hdr
->sh_info
)
6579 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6580 struct elf_link_hash_entry
*h
;
6582 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6583 h
= elf_follow_link (h
);
6591 if (symsecp
!= NULL
)
6593 asection
*symsec
= NULL
;
6594 if (h
->root
.type
== bfd_link_hash_defined
6595 || h
->root
.type
== bfd_link_hash_defweak
)
6596 symsec
= h
->root
.u
.def
.section
;
6600 if (tls_maskp
!= NULL
)
6602 struct ppc_link_hash_entry
*eh
;
6604 eh
= (struct ppc_link_hash_entry
*) h
;
6605 *tls_maskp
= &eh
->tls_mask
;
6610 Elf_Internal_Sym
*sym
;
6611 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6613 if (locsyms
== NULL
)
6615 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6616 if (locsyms
== NULL
)
6617 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6618 symtab_hdr
->sh_info
,
6619 0, NULL
, NULL
, NULL
);
6620 if (locsyms
== NULL
)
6622 *locsymsp
= locsyms
;
6624 sym
= locsyms
+ r_symndx
;
6632 if (symsecp
!= NULL
)
6633 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6635 if (tls_maskp
!= NULL
)
6637 struct got_entry
**lgot_ents
;
6638 unsigned char *tls_mask
;
6641 lgot_ents
= elf_local_got_ents (ibfd
);
6642 if (lgot_ents
!= NULL
)
6644 struct plt_entry
**local_plt
= (struct plt_entry
**)
6645 (lgot_ents
+ symtab_hdr
->sh_info
);
6646 unsigned char *lgot_masks
= (unsigned char *)
6647 (local_plt
+ symtab_hdr
->sh_info
);
6648 tls_mask
= &lgot_masks
[r_symndx
];
6650 *tls_maskp
= tls_mask
;
6656 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6657 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6658 type suitable for optimization, and 1 otherwise. */
6661 get_tls_mask (unsigned char **tls_maskp
,
6662 unsigned long *toc_symndx
,
6663 bfd_vma
*toc_addend
,
6664 Elf_Internal_Sym
**locsymsp
,
6665 const Elf_Internal_Rela
*rel
,
6668 unsigned long r_symndx
;
6670 struct elf_link_hash_entry
*h
;
6671 Elf_Internal_Sym
*sym
;
6675 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6676 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6679 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6681 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6684 /* Look inside a TOC section too. */
6687 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6688 off
= h
->root
.u
.def
.value
;
6691 off
= sym
->st_value
;
6692 off
+= rel
->r_addend
;
6693 BFD_ASSERT (off
% 8 == 0);
6694 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6695 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6696 if (toc_symndx
!= NULL
)
6697 *toc_symndx
= r_symndx
;
6698 if (toc_addend
!= NULL
)
6699 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6700 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6703 || ((h
->root
.type
== bfd_link_hash_defined
6704 || h
->root
.type
== bfd_link_hash_defweak
)
6705 && !h
->def_dynamic
))
6706 && (next_r
== -1 || next_r
== -2))
6711 /* Adjust all global syms defined in opd sections. In gcc generated
6712 code for the old ABI, these will already have been done. */
6715 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6717 struct ppc_link_hash_entry
*eh
;
6719 struct _opd_sec_data
*opd
;
6721 if (h
->root
.type
== bfd_link_hash_indirect
)
6724 if (h
->root
.type
== bfd_link_hash_warning
)
6725 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6727 if (h
->root
.type
!= bfd_link_hash_defined
6728 && h
->root
.type
!= bfd_link_hash_defweak
)
6731 eh
= (struct ppc_link_hash_entry
*) h
;
6732 if (eh
->adjust_done
)
6735 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6736 opd
= get_opd_info (sym_sec
);
6737 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6739 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6742 /* This entry has been deleted. */
6743 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6746 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6747 if (elf_discarded_section (dsec
))
6749 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6753 eh
->elf
.root
.u
.def
.value
= 0;
6754 eh
->elf
.root
.u
.def
.section
= dsec
;
6757 eh
->elf
.root
.u
.def
.value
+= adjust
;
6758 eh
->adjust_done
= 1;
6763 /* Handles decrementing dynamic reloc counts for the reloc specified by
6764 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6765 have already been determined. */
6768 dec_dynrel_count (bfd_vma r_info
,
6770 struct bfd_link_info
*info
,
6771 Elf_Internal_Sym
**local_syms
,
6772 struct elf_link_hash_entry
*h
,
6775 enum elf_ppc64_reloc_type r_type
;
6776 struct ppc_dyn_relocs
*p
;
6777 struct ppc_dyn_relocs
**pp
;
6779 /* Can this reloc be dynamic? This switch, and later tests here
6780 should be kept in sync with the code in check_relocs. */
6781 r_type
= ELF64_R_TYPE (r_info
);
6787 case R_PPC64_TPREL16
:
6788 case R_PPC64_TPREL16_LO
:
6789 case R_PPC64_TPREL16_HI
:
6790 case R_PPC64_TPREL16_HA
:
6791 case R_PPC64_TPREL16_DS
:
6792 case R_PPC64_TPREL16_LO_DS
:
6793 case R_PPC64_TPREL16_HIGHER
:
6794 case R_PPC64_TPREL16_HIGHERA
:
6795 case R_PPC64_TPREL16_HIGHEST
:
6796 case R_PPC64_TPREL16_HIGHESTA
:
6800 case R_PPC64_TPREL64
:
6801 case R_PPC64_DTPMOD64
:
6802 case R_PPC64_DTPREL64
:
6803 case R_PPC64_ADDR64
:
6807 case R_PPC64_ADDR14
:
6808 case R_PPC64_ADDR14_BRNTAKEN
:
6809 case R_PPC64_ADDR14_BRTAKEN
:
6810 case R_PPC64_ADDR16
:
6811 case R_PPC64_ADDR16_DS
:
6812 case R_PPC64_ADDR16_HA
:
6813 case R_PPC64_ADDR16_HI
:
6814 case R_PPC64_ADDR16_HIGHER
:
6815 case R_PPC64_ADDR16_HIGHERA
:
6816 case R_PPC64_ADDR16_HIGHEST
:
6817 case R_PPC64_ADDR16_HIGHESTA
:
6818 case R_PPC64_ADDR16_LO
:
6819 case R_PPC64_ADDR16_LO_DS
:
6820 case R_PPC64_ADDR24
:
6821 case R_PPC64_ADDR32
:
6822 case R_PPC64_UADDR16
:
6823 case R_PPC64_UADDR32
:
6824 case R_PPC64_UADDR64
:
6829 if (local_syms
!= NULL
)
6831 unsigned long r_symndx
;
6832 Elf_Internal_Sym
*sym
;
6833 bfd
*ibfd
= sec
->owner
;
6835 r_symndx
= ELF64_R_SYM (r_info
);
6836 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6841 && (must_be_dyn_reloc (info
, r_type
)
6844 || h
->root
.type
== bfd_link_hash_defweak
6845 || !h
->def_regular
))))
6846 || (ELIMINATE_COPY_RELOCS
6849 && (h
->root
.type
== bfd_link_hash_defweak
6850 || !h
->def_regular
)))
6856 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6859 if (sym_sec
!= NULL
)
6861 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6862 pp
= (struct ppc_dyn_relocs
**) vpp
;
6866 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6867 pp
= (struct ppc_dyn_relocs
**) vpp
;
6870 /* elf_gc_sweep may have already removed all dyn relocs associated
6871 with local syms for a given section. Don't report a dynreloc
6877 while ((p
= *pp
) != NULL
)
6881 if (!must_be_dyn_reloc (info
, r_type
))
6891 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6893 bfd_set_error (bfd_error_bad_value
);
6897 /* Remove unused Official Procedure Descriptor entries. Currently we
6898 only remove those associated with functions in discarded link-once
6899 sections, or weakly defined functions that have been overridden. It
6900 would be possible to remove many more entries for statically linked
6904 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
6907 bfd_boolean some_edited
= FALSE
;
6908 asection
*need_pad
= NULL
;
6910 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6913 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6914 Elf_Internal_Shdr
*symtab_hdr
;
6915 Elf_Internal_Sym
*local_syms
;
6916 struct elf_link_hash_entry
**sym_hashes
;
6918 struct _opd_sec_data
*opd
;
6919 bfd_boolean need_edit
, add_aux_fields
;
6920 bfd_size_type cnt_16b
= 0;
6922 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6923 if (sec
== NULL
|| sec
->size
== 0)
6926 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6929 if (sec
->output_section
== bfd_abs_section_ptr
)
6932 /* Look through the section relocs. */
6933 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6937 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6938 sym_hashes
= elf_sym_hashes (ibfd
);
6940 /* Read the relocations. */
6941 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6943 if (relstart
== NULL
)
6946 /* First run through the relocs to check they are sane, and to
6947 determine whether we need to edit this opd section. */
6951 relend
= relstart
+ sec
->reloc_count
;
6952 for (rel
= relstart
; rel
< relend
; )
6954 enum elf_ppc64_reloc_type r_type
;
6955 unsigned long r_symndx
;
6957 struct elf_link_hash_entry
*h
;
6958 Elf_Internal_Sym
*sym
;
6960 /* .opd contains a regular array of 16 or 24 byte entries. We're
6961 only interested in the reloc pointing to a function entry
6963 if (rel
->r_offset
!= offset
6964 || rel
+ 1 >= relend
6965 || (rel
+ 1)->r_offset
!= offset
+ 8)
6967 /* If someone messes with .opd alignment then after a
6968 "ld -r" we might have padding in the middle of .opd.
6969 Also, there's nothing to prevent someone putting
6970 something silly in .opd with the assembler. No .opd
6971 optimization for them! */
6973 (*_bfd_error_handler
)
6974 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6979 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6980 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6982 (*_bfd_error_handler
)
6983 (_("%B: unexpected reloc type %u in .opd section"),
6989 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6990 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6994 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6996 const char *sym_name
;
6998 sym_name
= h
->root
.root
.string
;
7000 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7003 (*_bfd_error_handler
)
7004 (_("%B: undefined sym `%s' in .opd section"),
7010 /* opd entries are always for functions defined in the
7011 current input bfd. If the symbol isn't defined in the
7012 input bfd, then we won't be using the function in this
7013 bfd; It must be defined in a linkonce section in another
7014 bfd, or is weak. It's also possible that we are
7015 discarding the function due to a linker script /DISCARD/,
7016 which we test for via the output_section. */
7017 if (sym_sec
->owner
!= ibfd
7018 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7023 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7025 if (sec
->size
== offset
+ 24)
7030 if (rel
== relend
&& sec
->size
== offset
+ 16)
7038 if (rel
->r_offset
== offset
+ 24)
7040 else if (rel
->r_offset
!= offset
+ 16)
7042 else if (rel
+ 1 < relend
7043 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7044 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7049 else if (rel
+ 2 < relend
7050 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7051 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7060 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7062 if (need_edit
|| add_aux_fields
)
7064 Elf_Internal_Rela
*write_rel
;
7065 bfd_byte
*rptr
, *wptr
;
7066 bfd_byte
*new_contents
;
7071 new_contents
= NULL
;
7072 amt
= sec
->size
* sizeof (long) / 8;
7073 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7074 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7075 if (opd
->adjust
== NULL
)
7077 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7079 /* This seems a waste of time as input .opd sections are all
7080 zeros as generated by gcc, but I suppose there's no reason
7081 this will always be so. We might start putting something in
7082 the third word of .opd entries. */
7083 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7086 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7091 if (local_syms
!= NULL
7092 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7094 if (elf_section_data (sec
)->relocs
!= relstart
)
7098 sec
->contents
= loc
;
7099 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7102 elf_section_data (sec
)->relocs
= relstart
;
7104 new_contents
= sec
->contents
;
7107 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7108 if (new_contents
== NULL
)
7112 wptr
= new_contents
;
7113 rptr
= sec
->contents
;
7115 write_rel
= relstart
;
7119 for (rel
= relstart
; rel
< relend
; rel
++)
7121 unsigned long r_symndx
;
7123 struct elf_link_hash_entry
*h
;
7124 Elf_Internal_Sym
*sym
;
7126 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7127 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7131 if (rel
->r_offset
== offset
)
7133 struct ppc_link_hash_entry
*fdh
= NULL
;
7135 /* See if the .opd entry is full 24 byte or
7136 16 byte (with fd_aux entry overlapped with next
7139 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7140 || (rel
+ 3 < relend
7141 && rel
[2].r_offset
== offset
+ 16
7142 && rel
[3].r_offset
== offset
+ 24
7143 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7144 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7148 && h
->root
.root
.string
[0] == '.')
7150 struct ppc_link_hash_table
*htab
;
7152 htab
= ppc_hash_table (info
);
7154 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7157 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7158 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7162 skip
= (sym_sec
->owner
!= ibfd
7163 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7166 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7168 /* Arrange for the function descriptor sym
7170 fdh
->elf
.root
.u
.def
.value
= 0;
7171 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7173 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7177 /* We'll be keeping this opd entry. */
7181 /* Redefine the function descriptor symbol to
7182 this location in the opd section. It is
7183 necessary to update the value here rather
7184 than using an array of adjustments as we do
7185 for local symbols, because various places
7186 in the generic ELF code use the value
7187 stored in u.def.value. */
7188 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7189 fdh
->adjust_done
= 1;
7192 /* Local syms are a bit tricky. We could
7193 tweak them as they can be cached, but
7194 we'd need to look through the local syms
7195 for the function descriptor sym which we
7196 don't have at the moment. So keep an
7197 array of adjustments. */
7198 opd
->adjust
[rel
->r_offset
/ 8]
7199 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7202 memcpy (wptr
, rptr
, opd_ent_size
);
7203 wptr
+= opd_ent_size
;
7204 if (add_aux_fields
&& opd_ent_size
== 16)
7206 memset (wptr
, '\0', 8);
7210 rptr
+= opd_ent_size
;
7211 offset
+= opd_ent_size
;
7217 && !info
->relocatable
7218 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7224 /* We need to adjust any reloc offsets to point to the
7225 new opd entries. While we're at it, we may as well
7226 remove redundant relocs. */
7227 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7228 if (write_rel
!= rel
)
7229 memcpy (write_rel
, rel
, sizeof (*rel
));
7234 sec
->size
= wptr
- new_contents
;
7235 sec
->reloc_count
= write_rel
- relstart
;
7238 free (sec
->contents
);
7239 sec
->contents
= new_contents
;
7242 /* Fudge the header size too, as this is used later in
7243 elf_bfd_final_link if we are emitting relocs. */
7244 elf_section_data (sec
)->rel_hdr
.sh_size
7245 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
7246 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
7249 else if (elf_section_data (sec
)->relocs
!= relstart
)
7252 if (local_syms
!= NULL
7253 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7255 if (!info
->keep_memory
)
7258 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7263 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7265 /* If we are doing a final link and the last .opd entry is just 16 byte
7266 long, add a 8 byte padding after it. */
7267 if (need_pad
!= NULL
&& !info
->relocatable
)
7271 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7273 BFD_ASSERT (need_pad
->size
> 0);
7275 p
= bfd_malloc (need_pad
->size
+ 8);
7279 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7280 p
, 0, need_pad
->size
))
7283 need_pad
->contents
= p
;
7284 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7288 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7292 need_pad
->contents
= p
;
7295 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7296 need_pad
->size
+= 8;
7302 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7305 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7306 int no_tls_get_addr_opt
,
7309 struct ppc_link_hash_table
*htab
;
7311 htab
= ppc_hash_table (info
);
7316 htab
->do_multi_toc
= 0;
7317 else if (!htab
->do_multi_toc
)
7320 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7321 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7322 FALSE
, FALSE
, TRUE
));
7323 /* Move dynamic linking info to the function descriptor sym. */
7324 if (htab
->tls_get_addr
!= NULL
)
7325 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7326 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7327 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7328 FALSE
, FALSE
, TRUE
));
7329 if (!no_tls_get_addr_opt
)
7331 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7333 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7334 FALSE
, FALSE
, TRUE
);
7336 func_desc_adjust (opt
, info
);
7337 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7338 FALSE
, FALSE
, TRUE
);
7340 && (opt_fd
->root
.type
== bfd_link_hash_defined
7341 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7343 /* If glibc supports an optimized __tls_get_addr call stub,
7344 signalled by the presence of __tls_get_addr_opt, and we'll
7345 be calling __tls_get_addr via a plt call stub, then
7346 make __tls_get_addr point to __tls_get_addr_opt. */
7347 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7348 if (htab
->elf
.dynamic_sections_created
7350 && (tga_fd
->type
== STT_FUNC
7351 || tga_fd
->needs_plt
)
7352 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7353 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7354 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7356 struct plt_entry
*ent
;
7358 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7359 if (ent
->plt
.refcount
> 0)
7363 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7364 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7365 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7366 if (opt_fd
->dynindx
!= -1)
7368 /* Use __tls_get_addr_opt in dynamic relocations. */
7369 opt_fd
->dynindx
= -1;
7370 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7371 opt_fd
->dynstr_index
);
7372 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7375 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7376 tga
= &htab
->tls_get_addr
->elf
;
7377 if (opt
!= NULL
&& tga
!= NULL
)
7379 tga
->root
.type
= bfd_link_hash_indirect
;
7380 tga
->root
.u
.i
.link
= &opt
->root
;
7381 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7382 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7384 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7386 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7387 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7388 if (htab
->tls_get_addr
!= NULL
)
7390 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7391 htab
->tls_get_addr
->is_func
= 1;
7397 no_tls_get_addr_opt
= TRUE
;
7399 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7400 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7403 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7407 branch_reloc_hash_match (const bfd
*ibfd
,
7408 const Elf_Internal_Rela
*rel
,
7409 const struct ppc_link_hash_entry
*hash1
,
7410 const struct ppc_link_hash_entry
*hash2
)
7412 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7413 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7414 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7416 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7418 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7419 struct elf_link_hash_entry
*h
;
7421 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7422 h
= elf_follow_link (h
);
7423 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7429 /* Run through all the TLS relocs looking for optimization
7430 opportunities. The linker has been hacked (see ppc64elf.em) to do
7431 a preliminary section layout so that we know the TLS segment
7432 offsets. We can't optimize earlier because some optimizations need
7433 to know the tp offset, and we need to optimize before allocating
7434 dynamic relocations. */
7437 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7441 struct ppc_link_hash_table
*htab
;
7444 if (info
->relocatable
|| !info
->executable
)
7447 htab
= ppc_hash_table (info
);
7451 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7453 Elf_Internal_Sym
*locsyms
= NULL
;
7454 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7455 unsigned char *toc_ref
= NULL
;
7457 /* Look at all the sections for this file. Make two passes over
7458 the relocs. On the first pass, mark toc entries involved
7459 with tls relocs, and check that tls relocs involved in
7460 setting up a tls_get_addr call are indeed followed by such a
7461 call. If they are not, exclude them from the optimizations
7462 done on the second pass. */
7463 for (pass
= 0; pass
< 2; ++pass
)
7464 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7465 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7467 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7469 /* Read the relocations. */
7470 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7472 if (relstart
== NULL
)
7475 relend
= relstart
+ sec
->reloc_count
;
7476 for (rel
= relstart
; rel
< relend
; rel
++)
7478 enum elf_ppc64_reloc_type r_type
;
7479 unsigned long r_symndx
;
7480 struct elf_link_hash_entry
*h
;
7481 Elf_Internal_Sym
*sym
;
7483 unsigned char *tls_mask
;
7484 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7486 bfd_boolean ok_tprel
, is_local
;
7487 long toc_ref_index
= 0;
7488 int expecting_tls_get_addr
= 0;
7490 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7491 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7495 if (elf_section_data (sec
)->relocs
!= relstart
)
7497 if (toc_ref
!= NULL
)
7500 && (elf_symtab_hdr (ibfd
).contents
7501 != (unsigned char *) locsyms
))
7508 if (h
->root
.type
== bfd_link_hash_defined
7509 || h
->root
.type
== bfd_link_hash_defweak
)
7510 value
= h
->root
.u
.def
.value
;
7511 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7517 /* Symbols referenced by TLS relocs must be of type
7518 STT_TLS. So no need for .opd local sym adjust. */
7519 value
= sym
->st_value
;
7528 && h
->root
.type
== bfd_link_hash_undefweak
)
7532 value
+= sym_sec
->output_offset
;
7533 value
+= sym_sec
->output_section
->vma
;
7534 value
-= htab
->elf
.tls_sec
->vma
;
7535 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7536 < (bfd_vma
) 1 << 32);
7540 r_type
= ELF64_R_TYPE (rel
->r_info
);
7543 case R_PPC64_GOT_TLSLD16
:
7544 case R_PPC64_GOT_TLSLD16_LO
:
7545 expecting_tls_get_addr
= 1;
7548 case R_PPC64_GOT_TLSLD16_HI
:
7549 case R_PPC64_GOT_TLSLD16_HA
:
7550 /* These relocs should never be against a symbol
7551 defined in a shared lib. Leave them alone if
7552 that turns out to be the case. */
7559 tls_type
= TLS_TLS
| TLS_LD
;
7562 case R_PPC64_GOT_TLSGD16
:
7563 case R_PPC64_GOT_TLSGD16_LO
:
7564 expecting_tls_get_addr
= 1;
7567 case R_PPC64_GOT_TLSGD16_HI
:
7568 case R_PPC64_GOT_TLSGD16_HA
:
7574 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7576 tls_type
= TLS_TLS
| TLS_GD
;
7579 case R_PPC64_GOT_TPREL16_DS
:
7580 case R_PPC64_GOT_TPREL16_LO_DS
:
7581 case R_PPC64_GOT_TPREL16_HI
:
7582 case R_PPC64_GOT_TPREL16_HA
:
7587 tls_clear
= TLS_TPREL
;
7588 tls_type
= TLS_TLS
| TLS_TPREL
;
7594 case R_PPC64_TOC16_LO
:
7598 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7601 /* Mark this toc entry as referenced by a TLS
7602 code sequence. We can do that now in the
7603 case of R_PPC64_TLS, and after checking for
7604 tls_get_addr for the TOC16 relocs. */
7605 if (toc_ref
== NULL
)
7607 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7608 if (toc_ref
== NULL
)
7612 value
= h
->root
.u
.def
.value
;
7614 value
= sym
->st_value
;
7615 value
+= rel
->r_addend
;
7616 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7617 toc_ref_index
= value
/ 8;
7618 if (r_type
== R_PPC64_TLS
7619 || r_type
== R_PPC64_TLSGD
7620 || r_type
== R_PPC64_TLSLD
)
7622 toc_ref
[toc_ref_index
] = 1;
7626 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7631 expecting_tls_get_addr
= 2;
7634 case R_PPC64_TPREL64
:
7638 || !toc_ref
[rel
->r_offset
/ 8])
7643 tls_set
= TLS_EXPLICIT
;
7644 tls_clear
= TLS_TPREL
;
7649 case R_PPC64_DTPMOD64
:
7653 || !toc_ref
[rel
->r_offset
/ 8])
7655 if (rel
+ 1 < relend
7657 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7658 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7662 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7665 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7674 tls_set
= TLS_EXPLICIT
;
7685 if (!expecting_tls_get_addr
7686 || !sec
->has_tls_get_addr_call
)
7689 if (rel
+ 1 < relend
7690 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7692 htab
->tls_get_addr_fd
))
7694 if (expecting_tls_get_addr
== 2)
7696 /* Check for toc tls entries. */
7697 unsigned char *toc_tls
;
7700 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7705 if (retval
> 1 && toc_tls
!= NULL
)
7706 toc_ref
[toc_ref_index
] = 1;
7711 if (expecting_tls_get_addr
!= 1)
7714 /* Uh oh, we didn't find the expected call. We
7715 could just mark this symbol to exclude it
7716 from tls optimization but it's safer to skip
7717 the entire section. */
7718 sec
->has_tls_reloc
= 0;
7722 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7724 struct plt_entry
*ent
;
7725 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7728 if (ent
->addend
== 0)
7730 if (ent
->plt
.refcount
> 0)
7732 ent
->plt
.refcount
-= 1;
7733 expecting_tls_get_addr
= 0;
7739 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7741 struct plt_entry
*ent
;
7742 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7745 if (ent
->addend
== 0)
7747 if (ent
->plt
.refcount
> 0)
7748 ent
->plt
.refcount
-= 1;
7756 if ((tls_set
& TLS_EXPLICIT
) == 0)
7758 struct got_entry
*ent
;
7760 /* Adjust got entry for this reloc. */
7764 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7766 for (; ent
!= NULL
; ent
= ent
->next
)
7767 if (ent
->addend
== rel
->r_addend
7768 && ent
->owner
== ibfd
7769 && ent
->tls_type
== tls_type
)
7776 /* We managed to get rid of a got entry. */
7777 if (ent
->got
.refcount
> 0)
7778 ent
->got
.refcount
-= 1;
7783 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7784 we'll lose one or two dyn relocs. */
7785 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7789 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7791 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7797 *tls_mask
|= tls_set
;
7798 *tls_mask
&= ~tls_clear
;
7801 if (elf_section_data (sec
)->relocs
!= relstart
)
7805 if (toc_ref
!= NULL
)
7809 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7811 if (!info
->keep_memory
)
7814 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7820 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7821 the values of any global symbols in a toc section that has been
7822 edited. Globals in toc sections should be a rarity, so this function
7823 sets a flag if any are found in toc sections other than the one just
7824 edited, so that futher hash table traversals can be avoided. */
7826 struct adjust_toc_info
7829 unsigned long *skip
;
7830 bfd_boolean global_toc_syms
;
7834 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7836 struct ppc_link_hash_entry
*eh
;
7837 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7839 if (h
->root
.type
== bfd_link_hash_indirect
)
7842 if (h
->root
.type
== bfd_link_hash_warning
)
7843 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7845 if (h
->root
.type
!= bfd_link_hash_defined
7846 && h
->root
.type
!= bfd_link_hash_defweak
)
7849 eh
= (struct ppc_link_hash_entry
*) h
;
7850 if (eh
->adjust_done
)
7853 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7855 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
7856 if (skip
!= (unsigned long) -1)
7857 eh
->elf
.root
.u
.def
.value
-= skip
;
7860 (*_bfd_error_handler
)
7861 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
7862 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
7863 eh
->elf
.root
.u
.def
.value
= 0;
7865 eh
->adjust_done
= 1;
7867 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7868 toc_inf
->global_toc_syms
= TRUE
;
7873 /* Examine all relocs referencing .toc sections in order to remove
7874 unused .toc entries. */
7877 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7880 struct adjust_toc_info toc_inf
;
7882 toc_inf
.global_toc_syms
= TRUE
;
7883 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7885 asection
*toc
, *sec
;
7886 Elf_Internal_Shdr
*symtab_hdr
;
7887 Elf_Internal_Sym
*local_syms
;
7888 struct elf_link_hash_entry
**sym_hashes
;
7889 Elf_Internal_Rela
*relstart
, *rel
;
7890 unsigned long *skip
, *drop
;
7891 unsigned char *used
;
7892 unsigned char *keep
, last
, some_unused
;
7894 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7897 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7898 || elf_discarded_section (toc
))
7902 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7903 sym_hashes
= elf_sym_hashes (ibfd
);
7905 /* Look at sections dropped from the final link. */
7908 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7910 if (sec
->reloc_count
== 0
7911 || !elf_discarded_section (sec
)
7912 || get_opd_info (sec
)
7913 || (sec
->flags
& SEC_ALLOC
) == 0
7914 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7917 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7918 if (relstart
== NULL
)
7921 /* Run through the relocs to see which toc entries might be
7923 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7925 enum elf_ppc64_reloc_type r_type
;
7926 unsigned long r_symndx
;
7928 struct elf_link_hash_entry
*h
;
7929 Elf_Internal_Sym
*sym
;
7932 r_type
= ELF64_R_TYPE (rel
->r_info
);
7939 case R_PPC64_TOC16_LO
:
7940 case R_PPC64_TOC16_HI
:
7941 case R_PPC64_TOC16_HA
:
7942 case R_PPC64_TOC16_DS
:
7943 case R_PPC64_TOC16_LO_DS
:
7947 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7948 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7956 val
= h
->root
.u
.def
.value
;
7958 val
= sym
->st_value
;
7959 val
+= rel
->r_addend
;
7961 if (val
>= toc
->size
)
7964 /* Anything in the toc ought to be aligned to 8 bytes.
7965 If not, don't mark as unused. */
7971 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7979 if (elf_section_data (sec
)->relocs
!= relstart
)
7986 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7990 if (local_syms
!= NULL
7991 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7995 && elf_section_data (sec
)->relocs
!= relstart
)
8002 /* Now check all kept sections that might reference the toc.
8003 Check the toc itself last. */
8004 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8007 sec
= (sec
== toc
? NULL
8008 : sec
->next
== NULL
? toc
8009 : sec
->next
== toc
&& toc
->next
? toc
->next
8014 if (sec
->reloc_count
== 0
8015 || elf_discarded_section (sec
)
8016 || get_opd_info (sec
)
8017 || (sec
->flags
& SEC_ALLOC
) == 0
8018 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8021 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
8022 if (relstart
== NULL
)
8025 /* Mark toc entries referenced as used. */
8028 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8030 enum elf_ppc64_reloc_type r_type
;
8031 unsigned long r_symndx
;
8033 struct elf_link_hash_entry
*h
;
8034 Elf_Internal_Sym
*sym
;
8037 r_type
= ELF64_R_TYPE (rel
->r_info
);
8041 case R_PPC64_TOC16_LO
:
8042 case R_PPC64_TOC16_HI
:
8043 case R_PPC64_TOC16_HA
:
8044 case R_PPC64_TOC16_DS
:
8045 case R_PPC64_TOC16_LO_DS
:
8046 /* In case we're taking addresses of toc entries. */
8047 case R_PPC64_ADDR64
:
8054 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8055 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8066 val
= h
->root
.u
.def
.value
;
8068 val
= sym
->st_value
;
8069 val
+= rel
->r_addend
;
8071 if (val
>= toc
->size
)
8074 /* For the toc section, we only mark as used if
8075 this entry itself isn't unused. */
8078 && (used
[rel
->r_offset
>> 3]
8079 || !skip
[rel
->r_offset
>> 3]))
8080 /* Do all the relocs again, to catch reference
8089 /* Merge the used and skip arrays. Assume that TOC
8090 doublewords not appearing as either used or unused belong
8091 to to an entry more than one doubleword in size. */
8092 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8093 drop
< skip
+ (toc
->size
+ 7) / 8;
8114 bfd_byte
*contents
, *src
;
8117 /* Shuffle the toc contents, and at the same time convert the
8118 skip array from booleans into offsets. */
8119 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8122 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8124 for (src
= contents
, off
= 0, drop
= skip
;
8125 src
< contents
+ toc
->size
;
8130 *drop
= (unsigned long) -1;
8136 memcpy (src
- off
, src
, 8);
8139 toc
->rawsize
= toc
->size
;
8140 toc
->size
= src
- contents
- off
;
8142 if (toc
->reloc_count
!= 0)
8144 Elf_Internal_Rela
*wrel
;
8147 /* Read toc relocs. */
8148 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8150 if (relstart
== NULL
)
8153 /* Remove unused toc relocs, and adjust those we keep. */
8155 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
8156 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
8158 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8159 wrel
->r_info
= rel
->r_info
;
8160 wrel
->r_addend
= rel
->r_addend
;
8163 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8164 &local_syms
, NULL
, NULL
))
8167 toc
->reloc_count
= wrel
- relstart
;
8168 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
8169 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
8170 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
8173 /* Adjust addends for relocs against the toc section sym. */
8174 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8176 if (sec
->reloc_count
== 0
8177 || elf_discarded_section (sec
))
8180 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8182 if (relstart
== NULL
)
8185 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8187 enum elf_ppc64_reloc_type r_type
;
8188 unsigned long r_symndx
;
8190 struct elf_link_hash_entry
*h
;
8191 Elf_Internal_Sym
*sym
;
8193 r_type
= ELF64_R_TYPE (rel
->r_info
);
8200 case R_PPC64_TOC16_LO
:
8201 case R_PPC64_TOC16_HI
:
8202 case R_PPC64_TOC16_HA
:
8203 case R_PPC64_TOC16_DS
:
8204 case R_PPC64_TOC16_LO_DS
:
8205 case R_PPC64_ADDR64
:
8209 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8210 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8214 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
8217 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
8221 /* We shouldn't have local or global symbols defined in the TOC,
8222 but handle them anyway. */
8223 if (local_syms
!= NULL
)
8225 Elf_Internal_Sym
*sym
;
8227 for (sym
= local_syms
;
8228 sym
< local_syms
+ symtab_hdr
->sh_info
;
8230 if (sym
->st_value
!= 0
8231 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8233 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
8234 sym
->st_value
-= skip
[sym
->st_value
>> 3];
8237 (*_bfd_error_handler
)
8238 (_("%s defined in removed toc entry"),
8239 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8242 sym
->st_shndx
= SHN_ABS
;
8244 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8248 /* Finally, adjust any global syms defined in the toc. */
8249 if (toc_inf
.global_toc_syms
)
8252 toc_inf
.skip
= skip
;
8253 toc_inf
.global_toc_syms
= FALSE
;
8254 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8259 if (local_syms
!= NULL
8260 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8262 if (!info
->keep_memory
)
8265 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8273 /* Allocate space for one GOT entry. */
8276 allocate_got (struct elf_link_hash_entry
*h
,
8277 struct bfd_link_info
*info
,
8278 struct got_entry
*gent
)
8280 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8282 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8283 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8285 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8286 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8287 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8289 gent
->got
.offset
= got
->size
;
8290 got
->size
+= entsize
;
8292 dyn
= htab
->elf
.dynamic_sections_created
;
8294 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8295 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8296 || h
->root
.type
!= bfd_link_hash_undefweak
))
8298 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8299 relgot
->size
+= rentsize
;
8301 else if (h
->type
== STT_GNU_IFUNC
)
8303 asection
*relgot
= htab
->reliplt
;
8304 relgot
->size
+= rentsize
;
8305 htab
->got_reli_size
+= rentsize
;
8309 /* Allocate space in .plt, .got and associated reloc sections for
8313 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8315 struct bfd_link_info
*info
;
8316 struct ppc_link_hash_table
*htab
;
8318 struct ppc_link_hash_entry
*eh
;
8319 struct ppc_dyn_relocs
*p
;
8320 struct got_entry
**pgent
, *gent
;
8322 if (h
->root
.type
== bfd_link_hash_indirect
)
8325 if (h
->root
.type
== bfd_link_hash_warning
)
8326 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8328 info
= (struct bfd_link_info
*) inf
;
8329 htab
= ppc_hash_table (info
);
8333 if ((htab
->elf
.dynamic_sections_created
8335 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8336 || h
->type
== STT_GNU_IFUNC
)
8338 struct plt_entry
*pent
;
8339 bfd_boolean doneone
= FALSE
;
8340 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8341 if (pent
->plt
.refcount
> 0)
8343 if (!htab
->elf
.dynamic_sections_created
8344 || h
->dynindx
== -1)
8347 pent
->plt
.offset
= s
->size
;
8348 s
->size
+= PLT_ENTRY_SIZE
;
8353 /* If this is the first .plt entry, make room for the special
8357 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8359 pent
->plt
.offset
= s
->size
;
8361 /* Make room for this entry. */
8362 s
->size
+= PLT_ENTRY_SIZE
;
8364 /* Make room for the .glink code. */
8367 s
->size
+= GLINK_CALL_STUB_SIZE
;
8368 /* We need bigger stubs past index 32767. */
8369 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8373 /* We also need to make an entry in the .rela.plt section. */
8376 s
->size
+= sizeof (Elf64_External_Rela
);
8380 pent
->plt
.offset
= (bfd_vma
) -1;
8383 h
->plt
.plist
= NULL
;
8389 h
->plt
.plist
= NULL
;
8393 eh
= (struct ppc_link_hash_entry
*) h
;
8394 /* Run through the TLS GD got entries first if we're changing them
8396 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8397 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8398 if (gent
->got
.refcount
> 0
8399 && (gent
->tls_type
& TLS_GD
) != 0)
8401 /* This was a GD entry that has been converted to TPREL. If
8402 there happens to be a TPREL entry we can use that one. */
8403 struct got_entry
*ent
;
8404 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8405 if (ent
->got
.refcount
> 0
8406 && (ent
->tls_type
& TLS_TPREL
) != 0
8407 && ent
->addend
== gent
->addend
8408 && ent
->owner
== gent
->owner
)
8410 gent
->got
.refcount
= 0;
8414 /* If not, then we'll be using our own TPREL entry. */
8415 if (gent
->got
.refcount
!= 0)
8416 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8419 pgent
= &h
->got
.glist
;
8420 while ((gent
= *pgent
) != NULL
)
8421 if (gent
->got
.refcount
> 0)
8423 /* Make sure this symbol is output as a dynamic symbol.
8424 Undefined weak syms won't yet be marked as dynamic,
8425 nor will all TLS symbols. */
8426 if (h
->dynindx
== -1
8428 && h
->type
!= STT_GNU_IFUNC
8429 && htab
->elf
.dynamic_sections_created
)
8431 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8435 if ((gent
->tls_type
& TLS_LD
) != 0
8438 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8439 *pgent
= gent
->next
;
8443 if (!is_ppc64_elf (gent
->owner
))
8446 allocate_got (h
, info
, gent
);
8447 pgent
= &gent
->next
;
8450 *pgent
= gent
->next
;
8452 if (eh
->dyn_relocs
== NULL
8453 || (!htab
->elf
.dynamic_sections_created
8454 && h
->type
!= STT_GNU_IFUNC
))
8457 /* In the shared -Bsymbolic case, discard space allocated for
8458 dynamic pc-relative relocs against symbols which turn out to be
8459 defined in regular objects. For the normal shared case, discard
8460 space for relocs that have become local due to symbol visibility
8465 /* Relocs that use pc_count are those that appear on a call insn,
8466 or certain REL relocs (see must_be_dyn_reloc) that can be
8467 generated via assembly. We want calls to protected symbols to
8468 resolve directly to the function rather than going via the plt.
8469 If people want function pointer comparisons to work as expected
8470 then they should avoid writing weird assembly. */
8471 if (SYMBOL_CALLS_LOCAL (info
, h
))
8473 struct ppc_dyn_relocs
**pp
;
8475 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8477 p
->count
-= p
->pc_count
;
8486 /* Also discard relocs on undefined weak syms with non-default
8488 if (eh
->dyn_relocs
!= NULL
8489 && h
->root
.type
== bfd_link_hash_undefweak
)
8491 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8492 eh
->dyn_relocs
= NULL
;
8494 /* Make sure this symbol is output as a dynamic symbol.
8495 Undefined weak syms won't yet be marked as dynamic. */
8496 else if (h
->dynindx
== -1
8497 && !h
->forced_local
)
8499 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8504 else if (h
->type
== STT_GNU_IFUNC
)
8506 if (!h
->non_got_ref
)
8507 eh
->dyn_relocs
= NULL
;
8509 else if (ELIMINATE_COPY_RELOCS
)
8511 /* For the non-shared case, discard space for relocs against
8512 symbols which turn out to need copy relocs or are not
8518 /* Make sure this symbol is output as a dynamic symbol.
8519 Undefined weak syms won't yet be marked as dynamic. */
8520 if (h
->dynindx
== -1
8521 && !h
->forced_local
)
8523 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8527 /* If that succeeded, we know we'll be keeping all the
8529 if (h
->dynindx
!= -1)
8533 eh
->dyn_relocs
= NULL
;
8538 /* Finally, allocate space. */
8539 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8541 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8542 if (!htab
->elf
.dynamic_sections_created
)
8543 sreloc
= htab
->reliplt
;
8544 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8550 /* Find any dynamic relocs that apply to read-only sections. */
8553 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8555 struct ppc_link_hash_entry
*eh
;
8556 struct ppc_dyn_relocs
*p
;
8558 if (h
->root
.type
== bfd_link_hash_warning
)
8559 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8561 eh
= (struct ppc_link_hash_entry
*) h
;
8562 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8564 asection
*s
= p
->sec
->output_section
;
8566 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8568 struct bfd_link_info
*info
= inf
;
8570 info
->flags
|= DF_TEXTREL
;
8572 /* Not an error, just cut short the traversal. */
8579 /* Set the sizes of the dynamic sections. */
8582 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8583 struct bfd_link_info
*info
)
8585 struct ppc_link_hash_table
*htab
;
8591 htab
= ppc_hash_table (info
);
8595 dynobj
= htab
->elf
.dynobj
;
8599 if (htab
->elf
.dynamic_sections_created
)
8601 /* Set the contents of the .interp section to the interpreter. */
8602 if (info
->executable
)
8604 s
= bfd_get_section_by_name (dynobj
, ".interp");
8607 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8608 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8612 /* Set up .got offsets for local syms, and space for local dynamic
8614 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8616 struct got_entry
**lgot_ents
;
8617 struct got_entry
**end_lgot_ents
;
8618 struct plt_entry
**local_plt
;
8619 struct plt_entry
**end_local_plt
;
8620 unsigned char *lgot_masks
;
8621 bfd_size_type locsymcount
;
8622 Elf_Internal_Shdr
*symtab_hdr
;
8625 if (!is_ppc64_elf (ibfd
))
8628 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8630 struct ppc_dyn_relocs
*p
;
8632 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8634 if (!bfd_is_abs_section (p
->sec
)
8635 && bfd_is_abs_section (p
->sec
->output_section
))
8637 /* Input section has been discarded, either because
8638 it is a copy of a linkonce section or due to
8639 linker script /DISCARD/, so we'll be discarding
8642 else if (p
->count
!= 0)
8644 srel
= elf_section_data (p
->sec
)->sreloc
;
8645 if (!htab
->elf
.dynamic_sections_created
)
8646 srel
= htab
->reliplt
;
8647 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8648 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8649 info
->flags
|= DF_TEXTREL
;
8654 lgot_ents
= elf_local_got_ents (ibfd
);
8658 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8659 locsymcount
= symtab_hdr
->sh_info
;
8660 end_lgot_ents
= lgot_ents
+ locsymcount
;
8661 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8662 end_local_plt
= local_plt
+ locsymcount
;
8663 lgot_masks
= (unsigned char *) end_local_plt
;
8664 s
= ppc64_elf_tdata (ibfd
)->got
;
8665 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8666 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8668 struct got_entry
**pent
, *ent
;
8671 while ((ent
= *pent
) != NULL
)
8672 if (ent
->got
.refcount
> 0)
8674 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8676 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8681 unsigned int num
= 1;
8682 ent
->got
.offset
= s
->size
;
8683 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8687 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8688 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
8691 += num
* sizeof (Elf64_External_Rela
);
8693 += num
* sizeof (Elf64_External_Rela
);
8702 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8703 for (; local_plt
< end_local_plt
; ++local_plt
)
8705 struct plt_entry
*ent
;
8707 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
8708 if (ent
->plt
.refcount
> 0)
8711 ent
->plt
.offset
= s
->size
;
8712 s
->size
+= PLT_ENTRY_SIZE
;
8714 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
8717 ent
->plt
.offset
= (bfd_vma
) -1;
8721 /* Allocate global sym .plt and .got entries, and space for global
8722 sym dynamic relocs. */
8723 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8725 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8727 if (!is_ppc64_elf (ibfd
))
8730 if (ppc64_tlsld_got (ibfd
)->got
.refcount
> 0)
8732 s
= ppc64_elf_tdata (ibfd
)->got
;
8733 ppc64_tlsld_got (ibfd
)->got
.offset
= s
->size
;
8734 ppc64_tlsld_got (ibfd
)->owner
= ibfd
;
8738 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8739 srel
->size
+= sizeof (Elf64_External_Rela
);
8743 ppc64_tlsld_got (ibfd
)->got
.offset
= (bfd_vma
) -1;
8746 /* We now have determined the sizes of the various dynamic sections.
8747 Allocate memory for them. */
8749 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8751 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8754 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
8755 /* These haven't been allocated yet; don't strip. */
8757 else if (s
== htab
->got
8761 || s
== htab
->dynbss
)
8763 /* Strip this section if we don't need it; see the
8766 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8770 if (s
!= htab
->relplt
)
8773 /* We use the reloc_count field as a counter if we need
8774 to copy relocs into the output file. */
8780 /* It's not one of our sections, so don't allocate space. */
8786 /* If we don't need this section, strip it from the
8787 output file. This is mostly to handle .rela.bss and
8788 .rela.plt. We must create both sections in
8789 create_dynamic_sections, because they must be created
8790 before the linker maps input sections to output
8791 sections. The linker does that before
8792 adjust_dynamic_symbol is called, and it is that
8793 function which decides whether anything needs to go
8794 into these sections. */
8795 s
->flags
|= SEC_EXCLUDE
;
8799 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8802 /* Allocate memory for the section contents. We use bfd_zalloc
8803 here in case unused entries are not reclaimed before the
8804 section's contents are written out. This should not happen,
8805 but this way if it does we get a R_PPC64_NONE reloc in .rela
8806 sections instead of garbage.
8807 We also rely on the section contents being zero when writing
8809 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
8810 if (s
->contents
== NULL
)
8814 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8816 if (!is_ppc64_elf (ibfd
))
8819 s
= ppc64_elf_tdata (ibfd
)->got
;
8820 if (s
!= NULL
&& s
!= htab
->got
)
8823 s
->flags
|= SEC_EXCLUDE
;
8826 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8827 if (s
->contents
== NULL
)
8831 s
= ppc64_elf_tdata (ibfd
)->relgot
;
8835 s
->flags
|= SEC_EXCLUDE
;
8838 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8839 if (s
->contents
== NULL
)
8847 if (htab
->elf
.dynamic_sections_created
)
8849 /* Add some entries to the .dynamic section. We fill in the
8850 values later, in ppc64_elf_finish_dynamic_sections, but we
8851 must add the entries now so that we get the correct size for
8852 the .dynamic section. The DT_DEBUG entry is filled in by the
8853 dynamic linker and used by the debugger. */
8854 #define add_dynamic_entry(TAG, VAL) \
8855 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8857 if (info
->executable
)
8859 if (!add_dynamic_entry (DT_DEBUG
, 0))
8863 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8865 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8866 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8867 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8868 || !add_dynamic_entry (DT_JMPREL
, 0)
8869 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8875 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8876 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8880 if (!htab
->no_tls_get_addr_opt
8881 && htab
->tls_get_addr_fd
!= NULL
8882 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
8883 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
8888 if (!add_dynamic_entry (DT_RELA
, 0)
8889 || !add_dynamic_entry (DT_RELASZ
, 0)
8890 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8893 /* If any dynamic relocs apply to a read-only section,
8894 then we need a DT_TEXTREL entry. */
8895 if ((info
->flags
& DF_TEXTREL
) == 0)
8896 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
8898 if ((info
->flags
& DF_TEXTREL
) != 0)
8900 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8905 #undef add_dynamic_entry
8910 /* Determine the type of stub needed, if any, for a call. */
8912 static inline enum ppc_stub_type
8913 ppc_type_of_stub (asection
*input_sec
,
8914 const Elf_Internal_Rela
*rel
,
8915 struct ppc_link_hash_entry
**hash
,
8916 struct plt_entry
**plt_ent
,
8917 bfd_vma destination
)
8919 struct ppc_link_hash_entry
*h
= *hash
;
8921 bfd_vma branch_offset
;
8922 bfd_vma max_branch_offset
;
8923 enum elf_ppc64_reloc_type r_type
;
8927 struct plt_entry
*ent
;
8928 struct ppc_link_hash_entry
*fdh
= h
;
8930 && h
->oh
->is_func_descriptor
)
8931 fdh
= ppc_follow_link (h
->oh
);
8933 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8934 if (ent
->addend
== rel
->r_addend
8935 && ent
->plt
.offset
!= (bfd_vma
) -1)
8939 return ppc_stub_plt_call
;
8942 /* Here, we know we don't have a plt entry. If we don't have a
8943 either a defined function descriptor or a defined entry symbol
8944 in a regular object file, then it is pointless trying to make
8945 any other type of stub. */
8946 if (!((fdh
->elf
.root
.type
== bfd_link_hash_defined
8947 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8948 && fdh
->elf
.root
.u
.def
.section
->output_section
!= NULL
)
8949 && !((h
->elf
.root
.type
== bfd_link_hash_defined
8950 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8951 && h
->elf
.root
.u
.def
.section
->output_section
!= NULL
))
8952 return ppc_stub_none
;
8954 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
8956 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
8957 struct plt_entry
**local_plt
= (struct plt_entry
**)
8958 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
8959 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
8961 if (local_plt
[r_symndx
] != NULL
)
8963 struct plt_entry
*ent
;
8965 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
8966 if (ent
->addend
== rel
->r_addend
8967 && ent
->plt
.offset
!= (bfd_vma
) -1)
8970 return ppc_stub_plt_call
;
8975 /* Determine where the call point is. */
8976 location
= (input_sec
->output_offset
8977 + input_sec
->output_section
->vma
8980 branch_offset
= destination
- location
;
8981 r_type
= ELF64_R_TYPE (rel
->r_info
);
8983 /* Determine if a long branch stub is needed. */
8984 max_branch_offset
= 1 << 25;
8985 if (r_type
!= R_PPC64_REL24
)
8986 max_branch_offset
= 1 << 15;
8988 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
8989 /* We need a stub. Figure out whether a long_branch or plt_branch
8991 return ppc_stub_long_branch
;
8993 return ppc_stub_none
;
8996 /* Build a .plt call stub. */
8998 static inline bfd_byte
*
8999 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9001 #define PPC_LO(v) ((v) & 0xffff)
9002 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9003 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9005 if (PPC_HA (offset
) != 0)
9009 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9010 r
[1].r_offset
= r
[0].r_offset
+ 8;
9011 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9012 r
[1].r_addend
= r
[0].r_addend
;
9013 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9015 r
[2].r_offset
= r
[1].r_offset
+ 4;
9016 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9017 r
[2].r_addend
= r
[0].r_addend
;
9021 r
[2].r_offset
= r
[1].r_offset
+ 8;
9022 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9023 r
[2].r_addend
= r
[0].r_addend
+ 8;
9024 r
[3].r_offset
= r
[2].r_offset
+ 4;
9025 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9026 r
[3].r_addend
= r
[0].r_addend
+ 16;
9029 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9030 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9031 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9032 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9034 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9037 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9038 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9039 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9040 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9047 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9048 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9050 r
[1].r_offset
= r
[0].r_offset
+ 4;
9051 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9052 r
[1].r_addend
= r
[0].r_addend
;
9056 r
[1].r_offset
= r
[0].r_offset
+ 8;
9057 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9058 r
[1].r_addend
= r
[0].r_addend
+ 16;
9059 r
[2].r_offset
= r
[1].r_offset
+ 4;
9060 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9061 r
[2].r_addend
= r
[0].r_addend
+ 8;
9064 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9065 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9066 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9068 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9071 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9072 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9073 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9074 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9079 /* Build a special .plt call stub for __tls_get_addr. */
9081 #define LD_R11_0R3 0xe9630000
9082 #define LD_R12_0R3 0xe9830000
9083 #define MR_R0_R3 0x7c601b78
9084 #define CMPDI_R11_0 0x2c2b0000
9085 #define ADD_R3_R12_R13 0x7c6c6a14
9086 #define BEQLR 0x4d820020
9087 #define MR_R3_R0 0x7c030378
9088 #define MFLR_R11 0x7d6802a6
9089 #define STD_R11_0R1 0xf9610000
9090 #define BCTRL 0x4e800421
9091 #define LD_R11_0R1 0xe9610000
9092 #define LD_R2_0R1 0xe8410000
9093 #define MTLR_R11 0x7d6803a6
9095 static inline bfd_byte
*
9096 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9097 Elf_Internal_Rela
*r
)
9099 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9100 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9101 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9102 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9103 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9104 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9105 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9106 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9107 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9110 r
[0].r_offset
+= 9 * 4;
9111 p
= build_plt_stub (obfd
, p
, offset
, r
);
9112 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9114 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9115 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9116 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9117 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9122 static Elf_Internal_Rela
*
9123 get_relocs (asection
*sec
, int count
)
9125 Elf_Internal_Rela
*relocs
;
9126 struct bfd_elf_section_data
*elfsec_data
;
9128 elfsec_data
= elf_section_data (sec
);
9129 relocs
= elfsec_data
->relocs
;
9132 bfd_size_type relsize
;
9133 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9134 relocs
= bfd_alloc (sec
->owner
, relsize
);
9137 elfsec_data
->relocs
= relocs
;
9138 elfsec_data
->rel_hdr
.sh_size
= (sec
->reloc_count
9139 * sizeof (Elf64_External_Rela
));
9140 elfsec_data
->rel_hdr
.sh_entsize
= sizeof (Elf64_External_Rela
);
9141 sec
->reloc_count
= 0;
9143 relocs
+= sec
->reloc_count
;
9144 sec
->reloc_count
+= count
;
9149 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9151 struct ppc_stub_hash_entry
*stub_entry
;
9152 struct ppc_branch_hash_entry
*br_entry
;
9153 struct bfd_link_info
*info
;
9154 struct ppc_link_hash_table
*htab
;
9159 Elf_Internal_Rela
*r
;
9162 /* Massage our args to the form they really have. */
9163 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9166 htab
= ppc_hash_table (info
);
9170 /* Make a note of the offset within the stubs for this entry. */
9171 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9172 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9174 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9175 switch (stub_entry
->stub_type
)
9177 case ppc_stub_long_branch
:
9178 case ppc_stub_long_branch_r2off
:
9179 /* Branches are relative. This is where we are going to. */
9180 off
= dest
= (stub_entry
->target_value
9181 + stub_entry
->target_section
->output_offset
9182 + stub_entry
->target_section
->output_section
->vma
);
9184 /* And this is where we are coming from. */
9185 off
-= (stub_entry
->stub_offset
9186 + stub_entry
->stub_sec
->output_offset
9187 + stub_entry
->stub_sec
->output_section
->vma
);
9190 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9194 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9195 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9196 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9199 if (PPC_HA (r2off
) != 0)
9202 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9205 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9209 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9211 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9213 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
9214 stub_entry
->root
.string
);
9215 htab
->stub_error
= TRUE
;
9219 if (info
->emitrelocations
)
9221 r
= get_relocs (stub_entry
->stub_sec
, 1);
9224 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9225 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9227 if (stub_entry
->h
!= NULL
)
9229 struct elf_link_hash_entry
**hashes
;
9230 unsigned long symndx
;
9231 struct ppc_link_hash_entry
*h
;
9233 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9236 bfd_size_type hsize
;
9238 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9239 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9242 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9243 htab
->stub_globals
= 1;
9245 symndx
= htab
->stub_globals
++;
9247 hashes
[symndx
] = &h
->elf
;
9248 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9249 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9250 h
= ppc_follow_link (h
->oh
);
9251 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9252 /* H is an opd symbol. The addend must be zero. */
9256 off
= (h
->elf
.root
.u
.def
.value
9257 + h
->elf
.root
.u
.def
.section
->output_offset
9258 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9265 case ppc_stub_plt_branch
:
9266 case ppc_stub_plt_branch_r2off
:
9267 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9268 stub_entry
->root
.string
+ 9,
9270 if (br_entry
== NULL
)
9272 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9273 stub_entry
->root
.string
);
9274 htab
->stub_error
= TRUE
;
9278 dest
= (stub_entry
->target_value
9279 + stub_entry
->target_section
->output_offset
9280 + stub_entry
->target_section
->output_section
->vma
);
9282 bfd_put_64 (htab
->brlt
->owner
, dest
,
9283 htab
->brlt
->contents
+ br_entry
->offset
);
9285 if (br_entry
->iter
== htab
->stub_iteration
)
9289 if (htab
->relbrlt
!= NULL
)
9291 /* Create a reloc for the branch lookup table entry. */
9292 Elf_Internal_Rela rela
;
9295 rela
.r_offset
= (br_entry
->offset
9296 + htab
->brlt
->output_offset
9297 + htab
->brlt
->output_section
->vma
);
9298 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9299 rela
.r_addend
= dest
;
9301 rl
= htab
->relbrlt
->contents
;
9302 rl
+= (htab
->relbrlt
->reloc_count
++
9303 * sizeof (Elf64_External_Rela
));
9304 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9306 else if (info
->emitrelocations
)
9308 r
= get_relocs (htab
->brlt
, 1);
9311 /* brlt, being SEC_LINKER_CREATED does not go through the
9312 normal reloc processing. Symbols and offsets are not
9313 translated from input file to output file form, so
9314 set up the offset per the output file. */
9315 r
->r_offset
= (br_entry
->offset
9316 + htab
->brlt
->output_offset
9317 + htab
->brlt
->output_section
->vma
);
9318 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9323 dest
= (br_entry
->offset
9324 + htab
->brlt
->output_offset
9325 + htab
->brlt
->output_section
->vma
);
9328 - elf_gp (htab
->brlt
->output_section
->owner
)
9329 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9331 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9333 (*_bfd_error_handler
)
9334 (_("linkage table error against `%s'"),
9335 stub_entry
->root
.string
);
9336 bfd_set_error (bfd_error_bad_value
);
9337 htab
->stub_error
= TRUE
;
9341 if (info
->emitrelocations
)
9343 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9346 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9347 if (bfd_big_endian (info
->output_bfd
))
9349 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9351 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9352 r
[0].r_addend
= dest
;
9353 if (PPC_HA (off
) != 0)
9355 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9356 r
[1].r_offset
= r
[0].r_offset
+ 4;
9357 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9358 r
[1].r_addend
= r
[0].r_addend
;
9362 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9364 if (PPC_HA (off
) != 0)
9367 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9369 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9374 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9381 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9382 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9383 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9386 if (PPC_HA (off
) != 0)
9389 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9391 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9396 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9400 if (PPC_HA (r2off
) != 0)
9403 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9406 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9409 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9411 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9414 case ppc_stub_plt_call
:
9415 if (stub_entry
->h
!= NULL
9416 && stub_entry
->h
->is_func_descriptor
9417 && stub_entry
->h
->oh
!= NULL
)
9419 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9421 /* If the old-ABI "dot-symbol" is undefined make it weak so
9422 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9423 FIXME: We used to define the symbol on one of the call
9424 stubs instead, which is why we test symbol section id
9425 against htab->top_id in various places. Likely all
9426 these checks could now disappear. */
9427 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9428 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9431 /* Now build the stub. */
9432 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9433 if (dest
>= (bfd_vma
) -2)
9437 if (!htab
->elf
.dynamic_sections_created
9438 || stub_entry
->h
== NULL
9439 || stub_entry
->h
->elf
.dynindx
== -1)
9442 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9444 if (stub_entry
->h
== NULL
9445 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9447 Elf_Internal_Rela rela
;
9450 rela
.r_offset
= dest
;
9451 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9452 rela
.r_addend
= (stub_entry
->target_value
9453 + stub_entry
->target_section
->output_offset
9454 + stub_entry
->target_section
->output_section
->vma
);
9456 rl
= (htab
->reliplt
->contents
9457 + (htab
->reliplt
->reloc_count
++
9458 * sizeof (Elf64_External_Rela
)));
9459 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9460 stub_entry
->plt_ent
->plt
.offset
|= 1;
9464 - elf_gp (plt
->output_section
->owner
)
9465 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9467 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9469 (*_bfd_error_handler
)
9470 (_("linkage table error against `%s'"),
9471 stub_entry
->h
!= NULL
9472 ? stub_entry
->h
->elf
.root
.root
.string
9474 bfd_set_error (bfd_error_bad_value
);
9475 htab
->stub_error
= TRUE
;
9480 if (info
->emitrelocations
)
9482 r
= get_relocs (stub_entry
->stub_sec
,
9483 (2 + (PPC_HA (off
) != 0)
9484 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9487 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9488 if (bfd_big_endian (info
->output_bfd
))
9490 r
[0].r_addend
= dest
;
9492 if (stub_entry
->h
!= NULL
9493 && (stub_entry
->h
== htab
->tls_get_addr_fd
9494 || stub_entry
->h
== htab
->tls_get_addr
)
9495 && !htab
->no_tls_get_addr_opt
)
9496 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9498 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9507 stub_entry
->stub_sec
->size
+= size
;
9509 if (htab
->emit_stub_syms
)
9511 struct elf_link_hash_entry
*h
;
9514 const char *const stub_str
[] = { "long_branch",
9515 "long_branch_r2off",
9520 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9521 len2
= strlen (stub_entry
->root
.string
);
9522 name
= bfd_malloc (len1
+ len2
+ 2);
9525 memcpy (name
, stub_entry
->root
.string
, 9);
9526 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9527 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9528 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9531 if (h
->root
.type
== bfd_link_hash_new
)
9533 h
->root
.type
= bfd_link_hash_defined
;
9534 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9535 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9538 h
->ref_regular_nonweak
= 1;
9539 h
->forced_local
= 1;
9547 /* As above, but don't actually build the stub. Just bump offset so
9548 we know stub section sizes, and select plt_branch stubs where
9549 long_branch stubs won't do. */
9552 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9554 struct ppc_stub_hash_entry
*stub_entry
;
9555 struct bfd_link_info
*info
;
9556 struct ppc_link_hash_table
*htab
;
9560 /* Massage our args to the form they really have. */
9561 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9564 htab
= ppc_hash_table (info
);
9568 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9571 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9572 if (off
>= (bfd_vma
) -2)
9575 if (!htab
->elf
.dynamic_sections_created
9576 || stub_entry
->h
== NULL
9577 || stub_entry
->h
->elf
.dynindx
== -1)
9579 off
+= (plt
->output_offset
9580 + plt
->output_section
->vma
9581 - elf_gp (plt
->output_section
->owner
)
9582 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9584 size
= PLT_CALL_STUB_SIZE
;
9585 if (PPC_HA (off
) == 0)
9587 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9589 if (stub_entry
->h
!= NULL
9590 && (stub_entry
->h
== htab
->tls_get_addr_fd
9591 || stub_entry
->h
== htab
->tls_get_addr
)
9592 && !htab
->no_tls_get_addr_opt
)
9594 if (info
->emitrelocations
)
9596 stub_entry
->stub_sec
->reloc_count
9597 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9598 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9603 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9607 off
= (stub_entry
->target_value
9608 + stub_entry
->target_section
->output_offset
9609 + stub_entry
->target_section
->output_section
->vma
);
9610 off
-= (stub_entry
->stub_sec
->size
9611 + stub_entry
->stub_sec
->output_offset
9612 + stub_entry
->stub_sec
->output_section
->vma
);
9614 /* Reset the stub type from the plt variant in case we now
9615 can reach with a shorter stub. */
9616 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9617 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9620 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9622 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9623 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9625 if (PPC_HA (r2off
) != 0)
9630 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9631 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9633 struct ppc_branch_hash_entry
*br_entry
;
9635 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9636 stub_entry
->root
.string
+ 9,
9638 if (br_entry
== NULL
)
9640 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9641 stub_entry
->root
.string
);
9642 htab
->stub_error
= TRUE
;
9646 if (br_entry
->iter
!= htab
->stub_iteration
)
9648 br_entry
->iter
= htab
->stub_iteration
;
9649 br_entry
->offset
= htab
->brlt
->size
;
9650 htab
->brlt
->size
+= 8;
9652 if (htab
->relbrlt
!= NULL
)
9653 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9654 else if (info
->emitrelocations
)
9656 htab
->brlt
->reloc_count
+= 1;
9657 htab
->brlt
->flags
|= SEC_RELOC
;
9661 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9662 off
= (br_entry
->offset
9663 + htab
->brlt
->output_offset
9664 + htab
->brlt
->output_section
->vma
9665 - elf_gp (htab
->brlt
->output_section
->owner
)
9666 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9668 if (info
->emitrelocations
)
9670 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9671 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9674 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9677 if (PPC_HA (off
) != 0)
9683 if (PPC_HA (off
) != 0)
9686 if (PPC_HA (r2off
) != 0)
9690 else if (info
->emitrelocations
)
9692 stub_entry
->stub_sec
->reloc_count
+= 1;
9693 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9697 stub_entry
->stub_sec
->size
+= size
;
9701 /* Set up various things so that we can make a list of input sections
9702 for each output section included in the link. Returns -1 on error,
9703 0 when no stubs will be needed, and 1 on success. */
9706 ppc64_elf_setup_section_lists
9707 (struct bfd_link_info
*info
,
9708 asection
*(*add_stub_section
) (const char *, asection
*),
9709 void (*layout_sections_again
) (void))
9712 int top_id
, top_index
, id
;
9714 asection
**input_list
;
9716 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9720 /* Stash our params away. */
9721 htab
->add_stub_section
= add_stub_section
;
9722 htab
->layout_sections_again
= layout_sections_again
;
9724 if (htab
->brlt
== NULL
)
9727 /* Find the top input section id. */
9728 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9730 input_bfd
= input_bfd
->link_next
)
9732 for (section
= input_bfd
->sections
;
9734 section
= section
->next
)
9736 if (top_id
< section
->id
)
9737 top_id
= section
->id
;
9741 htab
->top_id
= top_id
;
9742 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9743 htab
->stub_group
= bfd_zmalloc (amt
);
9744 if (htab
->stub_group
== NULL
)
9747 /* Set toc_off for com, und, abs and ind sections. */
9748 for (id
= 0; id
< 3; id
++)
9749 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
9751 /* We can't use output_bfd->section_count here to find the top output
9752 section index as some sections may have been removed, and
9753 strip_excluded_output_sections doesn't renumber the indices. */
9754 for (section
= info
->output_bfd
->sections
, top_index
= 0;
9756 section
= section
->next
)
9758 if (top_index
< section
->index
)
9759 top_index
= section
->index
;
9762 htab
->top_index
= top_index
;
9763 amt
= sizeof (asection
*) * (top_index
+ 1);
9764 input_list
= bfd_zmalloc (amt
);
9765 htab
->input_list
= input_list
;
9766 if (input_list
== NULL
)
9772 /* Set up for first pass at multitoc partitioning. */
9775 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
9777 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9779 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
9780 htab
->toc_curr
= elf_gp (info
->output_bfd
);
9781 htab
->toc_bfd
= NULL
;
9782 htab
->toc_first_sec
= NULL
;
9785 /* The linker repeatedly calls this function for each TOC input section
9786 and linker generated GOT section. Group input bfds such that the toc
9787 within a group is less than 64k in size. */
9790 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
9792 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9793 bfd_vma addr
, off
, limit
;
9798 if (!htab
->second_toc_pass
)
9800 /* Keep track of the first .toc or .got section for this input bfd. */
9801 if (htab
->toc_bfd
!= isec
->owner
)
9803 htab
->toc_bfd
= isec
->owner
;
9804 htab
->toc_first_sec
= isec
;
9807 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
9808 off
= addr
- htab
->toc_curr
;
9810 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
9812 if (off
+ isec
->size
> limit
)
9814 addr
= (htab
->toc_first_sec
->output_offset
9815 + htab
->toc_first_sec
->output_section
->vma
);
9816 htab
->toc_curr
= addr
;
9819 /* toc_curr is the base address of this toc group. Set elf_gp
9820 for the input section to be the offset relative to the
9821 output toc base plus 0x8000. Making the input elf_gp an
9822 offset allows us to move the toc as a whole without
9823 recalculating input elf_gp. */
9824 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
9825 off
+= TOC_BASE_OFF
;
9827 /* Die if someone uses a linker script that doesn't keep input
9828 file .toc and .got together. */
9829 if (elf_gp (isec
->owner
) != 0
9830 && elf_gp (isec
->owner
) != off
)
9833 elf_gp (isec
->owner
) = off
;
9837 /* During the second pass toc_first_sec points to the start of
9838 a toc group, and toc_curr is used to track the old elf_gp.
9839 We use toc_bfd to ensure we only look at each bfd once. */
9840 if (htab
->toc_bfd
== isec
->owner
)
9842 htab
->toc_bfd
= isec
->owner
;
9844 if (htab
->toc_first_sec
== NULL
9845 || htab
->toc_curr
!= elf_gp (isec
->owner
))
9847 htab
->toc_curr
= elf_gp (isec
->owner
);
9848 htab
->toc_first_sec
= isec
;
9850 addr
= (htab
->toc_first_sec
->output_offset
9851 + htab
->toc_first_sec
->output_section
->vma
);
9852 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
9853 elf_gp (isec
->owner
) = off
;
9858 /* This function merges got entries in the same toc group. */
9861 merge_got_entries (struct got_entry
**pent
)
9863 struct got_entry
*ent
, *ent2
;
9865 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9866 if (!ent
->is_indirect
)
9867 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9868 if (!ent2
->is_indirect
9869 && ent2
->addend
== ent
->addend
9870 && ent2
->tls_type
== ent
->tls_type
9871 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9873 ent2
->is_indirect
= TRUE
;
9874 ent2
->got
.ent
= ent
;
9878 /* Called via elf_link_hash_traverse to merge GOT entries for global
9882 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9884 if (h
->root
.type
== bfd_link_hash_indirect
)
9887 if (h
->root
.type
== bfd_link_hash_warning
)
9888 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9890 merge_got_entries (&h
->got
.glist
);
9895 /* Called via elf_link_hash_traverse to allocate GOT entries for global
9899 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
9901 struct got_entry
*gent
;
9903 if (h
->root
.type
== bfd_link_hash_indirect
)
9906 if (h
->root
.type
== bfd_link_hash_warning
)
9907 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9909 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9910 if (!gent
->is_indirect
)
9911 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
9915 /* Called on the first multitoc pass after the last call to
9916 ppc64_elf_next_toc_section. This function removes duplicate GOT
9920 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
9922 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9923 struct bfd
*ibfd
, *ibfd2
;
9924 bfd_boolean done_something
;
9926 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
9928 /* Merge global sym got entries within a toc group. */
9929 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
9931 /* And tlsld_got. */
9932 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9934 struct got_entry
*ent
, *ent2
;
9936 if (!is_ppc64_elf (ibfd
))
9939 ent
= ppc64_tlsld_got (ibfd
);
9940 if (!ent
->is_indirect
9941 && ent
->got
.offset
!= (bfd_vma
) -1)
9943 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
9945 if (!is_ppc64_elf (ibfd2
))
9948 ent2
= ppc64_tlsld_got (ibfd2
);
9949 if (!ent2
->is_indirect
9950 && ent2
->got
.offset
!= (bfd_vma
) -1
9951 && elf_gp (ibfd2
) == elf_gp (ibfd
))
9953 ent2
->is_indirect
= TRUE
;
9954 ent2
->got
.ent
= ent
;
9960 /* Zap sizes of got sections. */
9961 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
9962 htab
->reliplt
->size
-= htab
->got_reli_size
;
9963 htab
->got_reli_size
= 0;
9965 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9967 asection
*got
, *relgot
;
9969 if (!is_ppc64_elf (ibfd
))
9972 got
= ppc64_elf_tdata (ibfd
)->got
;
9975 got
->rawsize
= got
->size
;
9977 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
9978 relgot
->rawsize
= relgot
->size
;
9983 /* Now reallocate the got, local syms first. We don't need to
9984 allocate section contents again since we never increase size. */
9985 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9987 struct got_entry
**lgot_ents
;
9988 struct got_entry
**end_lgot_ents
;
9989 struct plt_entry
**local_plt
;
9990 struct plt_entry
**end_local_plt
;
9991 unsigned char *lgot_masks
;
9992 bfd_size_type locsymcount
;
9993 Elf_Internal_Shdr
*symtab_hdr
;
9996 if (!is_ppc64_elf (ibfd
))
9999 lgot_ents
= elf_local_got_ents (ibfd
);
10003 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10004 locsymcount
= symtab_hdr
->sh_info
;
10005 end_lgot_ents
= lgot_ents
+ locsymcount
;
10006 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10007 end_local_plt
= local_plt
+ locsymcount
;
10008 lgot_masks
= (unsigned char *) end_local_plt
;
10009 s
= ppc64_elf_tdata (ibfd
)->got
;
10010 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10011 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10013 struct got_entry
*ent
;
10015 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10017 unsigned int num
= 1;
10018 ent
->got
.offset
= s
->size
;
10019 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10021 s
->size
+= num
* 8;
10023 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10024 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10026 htab
->reliplt
->size
10027 += num
* sizeof (Elf64_External_Rela
);
10028 htab
->got_reli_size
10029 += num
* sizeof (Elf64_External_Rela
);
10035 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10037 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10039 struct got_entry
*ent
;
10041 if (!is_ppc64_elf (ibfd
))
10044 ent
= ppc64_tlsld_got (ibfd
);
10045 if (!ent
->is_indirect
10046 && ent
->got
.offset
!= (bfd_vma
) -1)
10048 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10049 ent
->got
.offset
= s
->size
;
10053 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10054 srel
->size
+= sizeof (Elf64_External_Rela
);
10059 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10060 if (!done_something
)
10061 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10065 if (!is_ppc64_elf (ibfd
))
10068 got
= ppc64_elf_tdata (ibfd
)->got
;
10071 done_something
= got
->rawsize
!= got
->size
;
10072 if (done_something
)
10077 if (done_something
)
10078 (*htab
->layout_sections_again
) ();
10080 /* Set up for second pass over toc sections to recalculate elf_gp
10081 on input sections. */
10082 htab
->toc_bfd
= NULL
;
10083 htab
->toc_first_sec
= NULL
;
10084 htab
->second_toc_pass
= TRUE
;
10085 return done_something
;
10088 /* Called after second pass of multitoc partitioning. */
10091 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10093 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10098 /* After the second pass, toc_curr tracks the TOC offset used
10099 for code sections below in ppc64_elf_next_input_section. */
10100 htab
->toc_curr
= TOC_BASE_OFF
;
10103 /* No toc references were found in ISEC. If the code in ISEC makes no
10104 calls, then there's no need to use toc adjusting stubs when branching
10105 into ISEC. Actually, indirect calls from ISEC are OK as they will
10106 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10107 needed, and 2 if a cyclical call-graph was found but no other reason
10108 for a stub was detected. If called from the top level, a return of
10109 2 means the same as a return of 0. */
10112 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10114 Elf_Internal_Rela
*relstart
, *rel
;
10115 Elf_Internal_Sym
*local_syms
;
10117 struct ppc_link_hash_table
*htab
;
10119 /* We know none of our code bearing sections will need toc stubs. */
10120 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10123 if (isec
->size
== 0)
10126 if (isec
->output_section
== NULL
)
10129 if (isec
->reloc_count
== 0)
10132 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10133 info
->keep_memory
);
10134 if (relstart
== NULL
)
10137 /* Look for branches to outside of this section. */
10140 htab
= ppc_hash_table (info
);
10144 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10146 enum elf_ppc64_reloc_type r_type
;
10147 unsigned long r_symndx
;
10148 struct elf_link_hash_entry
*h
;
10149 struct ppc_link_hash_entry
*eh
;
10150 Elf_Internal_Sym
*sym
;
10152 struct _opd_sec_data
*opd
;
10156 r_type
= ELF64_R_TYPE (rel
->r_info
);
10157 if (r_type
!= R_PPC64_REL24
10158 && r_type
!= R_PPC64_REL14
10159 && r_type
!= R_PPC64_REL14_BRTAKEN
10160 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10163 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10164 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10171 /* Calls to dynamic lib functions go through a plt call stub
10173 eh
= (struct ppc_link_hash_entry
*) h
;
10175 && (eh
->elf
.plt
.plist
!= NULL
10177 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10183 if (sym_sec
== NULL
)
10184 /* Ignore other undefined symbols. */
10187 /* Assume branches to other sections not included in the link need
10188 stubs too, to cover -R and absolute syms. */
10189 if (sym_sec
->output_section
== NULL
)
10196 sym_value
= sym
->st_value
;
10199 if (h
->root
.type
!= bfd_link_hash_defined
10200 && h
->root
.type
!= bfd_link_hash_defweak
)
10202 sym_value
= h
->root
.u
.def
.value
;
10204 sym_value
+= rel
->r_addend
;
10206 /* If this branch reloc uses an opd sym, find the code section. */
10207 opd
= get_opd_info (sym_sec
);
10210 if (h
== NULL
&& opd
->adjust
!= NULL
)
10214 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10216 /* Assume deleted functions won't ever be called. */
10218 sym_value
+= adjust
;
10221 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10222 if (dest
== (bfd_vma
) -1)
10227 + sym_sec
->output_offset
10228 + sym_sec
->output_section
->vma
);
10230 /* Ignore branch to self. */
10231 if (sym_sec
== isec
)
10234 /* If the called function uses the toc, we need a stub. */
10235 if (sym_sec
->has_toc_reloc
10236 || sym_sec
->makes_toc_func_call
)
10242 /* Assume any branch that needs a long branch stub might in fact
10243 need a plt_branch stub. A plt_branch stub uses r2. */
10244 else if (dest
- (isec
->output_offset
10245 + isec
->output_section
->vma
10246 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10252 /* If calling back to a section in the process of being tested, we
10253 can't say for sure that no toc adjusting stubs are needed, so
10254 don't return zero. */
10255 else if (sym_sec
->call_check_in_progress
)
10258 /* Branches to another section that itself doesn't have any TOC
10259 references are OK. Recursively call ourselves to check. */
10260 else if (sym_sec
->id
<= htab
->top_id
10261 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
10265 /* Mark current section as indeterminate, so that other
10266 sections that call back to current won't be marked as
10268 isec
->call_check_in_progress
= 1;
10269 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10270 isec
->call_check_in_progress
= 0;
10274 /* An error. Exit. */
10278 else if (recur
<= 1)
10280 /* Known result. Mark as checked and set section flag. */
10281 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
10284 sym_sec
->makes_toc_func_call
= 1;
10291 /* Unknown result. Continue checking. */
10297 if (local_syms
!= NULL
10298 && (elf_symtab_hdr (isec
->owner
).contents
!= (unsigned char *) local_syms
))
10300 if (elf_section_data (isec
)->relocs
!= relstart
)
10306 /* The linker repeatedly calls this function for each input section,
10307 in the order that input sections are linked into output sections.
10308 Build lists of input sections to determine groupings between which
10309 we may insert linker stubs. */
10312 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10314 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10319 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10320 && isec
->output_section
->index
<= htab
->top_index
)
10322 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10323 /* Steal the link_sec pointer for our list. */
10324 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10325 /* This happens to make the list in reverse order,
10326 which is what we want. */
10327 PREV_SEC (isec
) = *list
;
10331 if (htab
->multi_toc_needed
)
10333 /* If a code section has a function that uses the TOC then we need
10334 to use the right TOC (obviously). Also, make sure that .opd gets
10335 the correct TOC value for R_PPC64_TOC relocs that don't have or
10336 can't find their function symbol (shouldn't ever happen now).
10337 Also specially treat .fixup for the linux kernel. .fixup
10338 contains branches, but only back to the function that hit an
10340 if (isec
->has_toc_reloc
10341 || (isec
->flags
& SEC_CODE
) == 0
10342 || strcmp (isec
->name
, ".fixup") == 0)
10344 if (elf_gp (isec
->owner
) != 0)
10345 htab
->toc_curr
= elf_gp (isec
->owner
);
10347 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
10349 int ret
= toc_adjusting_stub_needed (info
, isec
);
10353 isec
->makes_toc_func_call
= ret
& 1;
10357 /* Functions that don't use the TOC can belong in any TOC group.
10358 Use the last TOC base. This happens to make _init and _fini
10360 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10364 /* See whether we can group stub sections together. Grouping stub
10365 sections may result in fewer stubs. More importantly, we need to
10366 put all .init* and .fini* stubs at the beginning of the .init or
10367 .fini output sections respectively, because glibc splits the
10368 _init and _fini functions into multiple parts. Putting a stub in
10369 the middle of a function is not a good idea. */
10372 group_sections (struct ppc_link_hash_table
*htab
,
10373 bfd_size_type stub_group_size
,
10374 bfd_boolean stubs_always_before_branch
)
10377 bfd_size_type stub14_group_size
;
10378 bfd_boolean suppress_size_errors
;
10380 suppress_size_errors
= FALSE
;
10381 stub14_group_size
= stub_group_size
;
10382 if (stub_group_size
== 1)
10384 /* Default values. */
10385 if (stubs_always_before_branch
)
10387 stub_group_size
= 0x1e00000;
10388 stub14_group_size
= 0x7800;
10392 stub_group_size
= 0x1c00000;
10393 stub14_group_size
= 0x7000;
10395 suppress_size_errors
= TRUE
;
10398 list
= htab
->input_list
+ htab
->top_index
;
10401 asection
*tail
= *list
;
10402 while (tail
!= NULL
)
10406 bfd_size_type total
;
10407 bfd_boolean big_sec
;
10411 total
= tail
->size
;
10412 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
10413 ? stub14_group_size
: stub_group_size
);
10414 if (big_sec
&& !suppress_size_errors
)
10415 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10416 tail
->owner
, tail
);
10417 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10419 while ((prev
= PREV_SEC (curr
)) != NULL
10420 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10421 < (ppc64_elf_section_data (prev
)->has_14bit_branch
10422 ? stub14_group_size
: stub_group_size
))
10423 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10426 /* OK, the size from the start of CURR to the end is less
10427 than stub_group_size and thus can be handled by one stub
10428 section. (or the tail section is itself larger than
10429 stub_group_size, in which case we may be toast.) We
10430 should really be keeping track of the total size of stubs
10431 added here, as stubs contribute to the final output
10432 section size. That's a little tricky, and this way will
10433 only break if stubs added make the total size more than
10434 2^25, ie. for the default stub_group_size, if stubs total
10435 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10438 prev
= PREV_SEC (tail
);
10439 /* Set up this stub group. */
10440 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10442 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10444 /* But wait, there's more! Input sections up to stub_group_size
10445 bytes before the stub section can be handled by it too.
10446 Don't do this if we have a really large section after the
10447 stubs, as adding more stubs increases the chance that
10448 branches may not reach into the stub section. */
10449 if (!stubs_always_before_branch
&& !big_sec
)
10452 while (prev
!= NULL
10453 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10454 < (ppc64_elf_section_data (prev
)->has_14bit_branch
10455 ? stub14_group_size
: stub_group_size
))
10456 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10459 prev
= PREV_SEC (tail
);
10460 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10466 while (list
-- != htab
->input_list
);
10467 free (htab
->input_list
);
10471 /* Determine and set the size of the stub section for a final link.
10473 The basic idea here is to examine all the relocations looking for
10474 PC-relative calls to a target that is unreachable with a "bl"
10478 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10480 bfd_size_type stub_group_size
;
10481 bfd_boolean stubs_always_before_branch
;
10482 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10487 stubs_always_before_branch
= group_size
< 0;
10488 if (group_size
< 0)
10489 stub_group_size
= -group_size
;
10491 stub_group_size
= group_size
;
10493 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10498 unsigned int bfd_indx
;
10499 asection
*stub_sec
;
10501 htab
->stub_iteration
+= 1;
10503 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10505 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10507 Elf_Internal_Shdr
*symtab_hdr
;
10509 Elf_Internal_Sym
*local_syms
= NULL
;
10511 if (!is_ppc64_elf (input_bfd
))
10514 /* We'll need the symbol table in a second. */
10515 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10516 if (symtab_hdr
->sh_info
== 0)
10519 /* Walk over each section attached to the input bfd. */
10520 for (section
= input_bfd
->sections
;
10522 section
= section
->next
)
10524 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10526 /* If there aren't any relocs, then there's nothing more
10528 if ((section
->flags
& SEC_RELOC
) == 0
10529 || (section
->flags
& SEC_ALLOC
) == 0
10530 || (section
->flags
& SEC_LOAD
) == 0
10531 || (section
->flags
& SEC_CODE
) == 0
10532 || section
->reloc_count
== 0)
10535 /* If this section is a link-once section that will be
10536 discarded, then don't create any stubs. */
10537 if (section
->output_section
== NULL
10538 || section
->output_section
->owner
!= info
->output_bfd
)
10541 /* Get the relocs. */
10543 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10544 info
->keep_memory
);
10545 if (internal_relocs
== NULL
)
10546 goto error_ret_free_local
;
10548 /* Now examine each relocation. */
10549 irela
= internal_relocs
;
10550 irelaend
= irela
+ section
->reloc_count
;
10551 for (; irela
< irelaend
; irela
++)
10553 enum elf_ppc64_reloc_type r_type
;
10554 unsigned int r_indx
;
10555 enum ppc_stub_type stub_type
;
10556 struct ppc_stub_hash_entry
*stub_entry
;
10557 asection
*sym_sec
, *code_sec
;
10558 bfd_vma sym_value
, code_value
;
10559 bfd_vma destination
;
10560 bfd_boolean ok_dest
;
10561 struct ppc_link_hash_entry
*hash
;
10562 struct ppc_link_hash_entry
*fdh
;
10563 struct elf_link_hash_entry
*h
;
10564 Elf_Internal_Sym
*sym
;
10566 const asection
*id_sec
;
10567 struct _opd_sec_data
*opd
;
10568 struct plt_entry
*plt_ent
;
10570 r_type
= ELF64_R_TYPE (irela
->r_info
);
10571 r_indx
= ELF64_R_SYM (irela
->r_info
);
10573 if (r_type
>= R_PPC64_max
)
10575 bfd_set_error (bfd_error_bad_value
);
10576 goto error_ret_free_internal
;
10579 /* Only look for stubs on branch instructions. */
10580 if (r_type
!= R_PPC64_REL24
10581 && r_type
!= R_PPC64_REL14
10582 && r_type
!= R_PPC64_REL14_BRTAKEN
10583 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10586 /* Now determine the call target, its name, value,
10588 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
10589 r_indx
, input_bfd
))
10590 goto error_ret_free_internal
;
10591 hash
= (struct ppc_link_hash_entry
*) h
;
10598 sym_value
= sym
->st_value
;
10601 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
10602 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
10604 sym_value
= hash
->elf
.root
.u
.def
.value
;
10605 if (sym_sec
->output_section
!= NULL
)
10608 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
10609 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
10611 /* Recognise an old ABI func code entry sym, and
10612 use the func descriptor sym instead if it is
10614 if (hash
->elf
.root
.root
.string
[0] == '.'
10615 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
10617 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
10618 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
10620 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
10621 sym_value
= fdh
->elf
.root
.u
.def
.value
;
10622 if (sym_sec
->output_section
!= NULL
)
10631 bfd_set_error (bfd_error_bad_value
);
10632 goto error_ret_free_internal
;
10638 sym_value
+= irela
->r_addend
;
10639 destination
= (sym_value
10640 + sym_sec
->output_offset
10641 + sym_sec
->output_section
->vma
);
10644 code_sec
= sym_sec
;
10645 code_value
= sym_value
;
10646 opd
= get_opd_info (sym_sec
);
10651 if (hash
== NULL
&& opd
->adjust
!= NULL
)
10653 long adjust
= opd
->adjust
[sym_value
/ 8];
10656 code_value
+= adjust
;
10657 sym_value
+= adjust
;
10659 dest
= opd_entry_value (sym_sec
, sym_value
,
10660 &code_sec
, &code_value
);
10661 if (dest
!= (bfd_vma
) -1)
10663 destination
= dest
;
10666 /* Fixup old ABI sym to point at code
10668 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
10669 hash
->elf
.root
.u
.def
.section
= code_sec
;
10670 hash
->elf
.root
.u
.def
.value
= code_value
;
10675 /* Determine what (if any) linker stub is needed. */
10677 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
10678 &plt_ent
, destination
);
10680 if (stub_type
!= ppc_stub_plt_call
)
10682 /* Check whether we need a TOC adjusting stub.
10683 Since the linker pastes together pieces from
10684 different object files when creating the
10685 _init and _fini functions, it may be that a
10686 call to what looks like a local sym is in
10687 fact a call needing a TOC adjustment. */
10688 if (code_sec
!= NULL
10689 && code_sec
->output_section
!= NULL
10690 && (htab
->stub_group
[code_sec
->id
].toc_off
10691 != htab
->stub_group
[section
->id
].toc_off
)
10692 && (code_sec
->has_toc_reloc
10693 || code_sec
->makes_toc_func_call
))
10694 stub_type
= ppc_stub_long_branch_r2off
;
10697 if (stub_type
== ppc_stub_none
)
10700 /* __tls_get_addr calls might be eliminated. */
10701 if (stub_type
!= ppc_stub_plt_call
10703 && (hash
== htab
->tls_get_addr
10704 || hash
== htab
->tls_get_addr_fd
)
10705 && section
->has_tls_reloc
10706 && irela
!= internal_relocs
)
10708 /* Get tls info. */
10709 unsigned char *tls_mask
;
10711 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
10712 irela
- 1, input_bfd
))
10713 goto error_ret_free_internal
;
10714 if (*tls_mask
!= 0)
10718 /* Support for grouping stub sections. */
10719 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
10721 /* Get the name of this stub. */
10722 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
10724 goto error_ret_free_internal
;
10726 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
10727 stub_name
, FALSE
, FALSE
);
10728 if (stub_entry
!= NULL
)
10730 /* The proper stub has already been created. */
10735 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
10736 if (stub_entry
== NULL
)
10739 error_ret_free_internal
:
10740 if (elf_section_data (section
)->relocs
== NULL
)
10741 free (internal_relocs
);
10742 error_ret_free_local
:
10743 if (local_syms
!= NULL
10744 && (symtab_hdr
->contents
10745 != (unsigned char *) local_syms
))
10750 stub_entry
->stub_type
= stub_type
;
10751 if (stub_type
!= ppc_stub_plt_call
)
10753 stub_entry
->target_value
= code_value
;
10754 stub_entry
->target_section
= code_sec
;
10758 stub_entry
->target_value
= sym_value
;
10759 stub_entry
->target_section
= sym_sec
;
10761 stub_entry
->h
= hash
;
10762 stub_entry
->plt_ent
= plt_ent
;
10763 stub_entry
->addend
= irela
->r_addend
;
10765 if (stub_entry
->h
!= NULL
)
10766 htab
->stub_globals
+= 1;
10769 /* We're done with the internal relocs, free them. */
10770 if (elf_section_data (section
)->relocs
!= internal_relocs
)
10771 free (internal_relocs
);
10774 if (local_syms
!= NULL
10775 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
10777 if (!info
->keep_memory
)
10780 symtab_hdr
->contents
= (unsigned char *) local_syms
;
10784 /* We may have added some stubs. Find out the new size of the
10786 for (stub_sec
= htab
->stub_bfd
->sections
;
10788 stub_sec
= stub_sec
->next
)
10789 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
10791 stub_sec
->rawsize
= stub_sec
->size
;
10792 stub_sec
->size
= 0;
10793 stub_sec
->reloc_count
= 0;
10794 stub_sec
->flags
&= ~SEC_RELOC
;
10797 htab
->brlt
->size
= 0;
10798 htab
->brlt
->reloc_count
= 0;
10799 htab
->brlt
->flags
&= ~SEC_RELOC
;
10800 if (htab
->relbrlt
!= NULL
)
10801 htab
->relbrlt
->size
= 0;
10803 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
10805 if (info
->emitrelocations
10806 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
10808 htab
->glink
->reloc_count
= 1;
10809 htab
->glink
->flags
|= SEC_RELOC
;
10812 for (stub_sec
= htab
->stub_bfd
->sections
;
10814 stub_sec
= stub_sec
->next
)
10815 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
10816 && stub_sec
->rawsize
!= stub_sec
->size
)
10819 /* Exit from this loop when no stubs have been added, and no stubs
10820 have changed size. */
10821 if (stub_sec
== NULL
)
10824 /* Ask the linker to do its stuff. */
10825 (*htab
->layout_sections_again
) ();
10828 /* It would be nice to strip htab->brlt from the output if the
10829 section is empty, but it's too late. If we strip sections here,
10830 the dynamic symbol table is corrupted since the section symbol
10831 for the stripped section isn't written. */
10836 /* Called after we have determined section placement. If sections
10837 move, we'll be called again. Provide a value for TOCstart. */
10840 ppc64_elf_toc (bfd
*obfd
)
10845 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10846 order. The TOC starts where the first of these sections starts. */
10847 s
= bfd_get_section_by_name (obfd
, ".got");
10848 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10849 s
= bfd_get_section_by_name (obfd
, ".toc");
10850 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10851 s
= bfd_get_section_by_name (obfd
, ".tocbss");
10852 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10853 s
= bfd_get_section_by_name (obfd
, ".plt");
10854 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10856 /* This may happen for
10857 o references to TOC base (SYM@toc / TOC[tc0]) without a
10859 o bad linker script
10860 o --gc-sections and empty TOC sections
10862 FIXME: Warn user? */
10864 /* Look for a likely section. We probably won't even be
10866 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10867 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
10869 == (SEC_ALLOC
| SEC_SMALL_DATA
))
10872 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10873 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
10874 == (SEC_ALLOC
| SEC_SMALL_DATA
))
10877 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10878 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
10882 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10883 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
10889 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
10894 /* Build all the stubs associated with the current output file.
10895 The stubs are kept in a hash table attached to the main linker
10896 hash table. This function is called via gldelf64ppc_finish. */
10899 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
10900 struct bfd_link_info
*info
,
10903 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10904 asection
*stub_sec
;
10906 int stub_sec_count
= 0;
10911 htab
->emit_stub_syms
= emit_stub_syms
;
10913 /* Allocate memory to hold the linker stubs. */
10914 for (stub_sec
= htab
->stub_bfd
->sections
;
10916 stub_sec
= stub_sec
->next
)
10917 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
10918 && stub_sec
->size
!= 0)
10920 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
10921 if (stub_sec
->contents
== NULL
)
10923 /* We want to check that built size is the same as calculated
10924 size. rawsize is a convenient location to use. */
10925 stub_sec
->rawsize
= stub_sec
->size
;
10926 stub_sec
->size
= 0;
10929 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
10934 /* Build the .glink plt call stub. */
10935 if (htab
->emit_stub_syms
)
10937 struct elf_link_hash_entry
*h
;
10938 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
10939 TRUE
, FALSE
, FALSE
);
10942 if (h
->root
.type
== bfd_link_hash_new
)
10944 h
->root
.type
= bfd_link_hash_defined
;
10945 h
->root
.u
.def
.section
= htab
->glink
;
10946 h
->root
.u
.def
.value
= 8;
10947 h
->ref_regular
= 1;
10948 h
->def_regular
= 1;
10949 h
->ref_regular_nonweak
= 1;
10950 h
->forced_local
= 1;
10954 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
10955 if (info
->emitrelocations
)
10957 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
10960 r
->r_offset
= (htab
->glink
->output_offset
10961 + htab
->glink
->output_section
->vma
);
10962 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
10963 r
->r_addend
= plt0
;
10965 p
= htab
->glink
->contents
;
10966 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
10967 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
10969 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
10971 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
10973 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
10975 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
10977 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
10979 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
10981 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
10983 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
10985 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
10987 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
10989 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
10991 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
10993 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
10997 /* Build the .glink lazy link call stubs. */
10999 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11003 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11008 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11010 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11013 bfd_put_32 (htab
->glink
->owner
,
11014 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11018 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11021 if (htab
->brlt
->size
!= 0)
11023 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11025 if (htab
->brlt
->contents
== NULL
)
11028 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11030 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11031 htab
->relbrlt
->size
);
11032 if (htab
->relbrlt
->contents
== NULL
)
11036 /* Build the stubs as directed by the stub hash table. */
11037 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11039 if (htab
->relbrlt
!= NULL
)
11040 htab
->relbrlt
->reloc_count
= 0;
11042 for (stub_sec
= htab
->stub_bfd
->sections
;
11044 stub_sec
= stub_sec
->next
)
11045 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11047 stub_sec_count
+= 1;
11048 if (stub_sec
->rawsize
!= stub_sec
->size
)
11052 if (stub_sec
!= NULL
11053 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11055 htab
->stub_error
= TRUE
;
11056 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
11059 if (htab
->stub_error
)
11064 *stats
= bfd_malloc (500);
11065 if (*stats
== NULL
)
11068 sprintf (*stats
, _("linker stubs in %u group%s\n"
11070 " toc adjust %lu\n"
11071 " long branch %lu\n"
11072 " long toc adj %lu\n"
11075 stub_sec_count
== 1 ? "" : "s",
11076 htab
->stub_count
[ppc_stub_long_branch
- 1],
11077 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11078 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11079 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11080 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11085 /* This function undoes the changes made by add_symbol_adjust. */
11088 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11090 struct ppc_link_hash_entry
*eh
;
11092 if (h
->root
.type
== bfd_link_hash_indirect
)
11095 if (h
->root
.type
== bfd_link_hash_warning
)
11096 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11098 eh
= (struct ppc_link_hash_entry
*) h
;
11099 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11102 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11107 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11109 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11112 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11115 /* What to do when ld finds relocations against symbols defined in
11116 discarded sections. */
11118 static unsigned int
11119 ppc64_elf_action_discarded (asection
*sec
)
11121 if (strcmp (".opd", sec
->name
) == 0)
11124 if (strcmp (".toc", sec
->name
) == 0)
11127 if (strcmp (".toc1", sec
->name
) == 0)
11130 return _bfd_elf_default_action_discarded (sec
);
11133 /* The RELOCATE_SECTION function is called by the ELF backend linker
11134 to handle the relocations for a section.
11136 The relocs are always passed as Rela structures; if the section
11137 actually uses Rel structures, the r_addend field will always be
11140 This function is responsible for adjust the section contents as
11141 necessary, and (if using Rela relocs and generating a
11142 relocatable output file) adjusting the reloc addend as
11145 This function does not have to worry about setting the reloc
11146 address or the reloc symbol index.
11148 LOCAL_SYMS is a pointer to the swapped in local symbols.
11150 LOCAL_SECTIONS is an array giving the section in the input file
11151 corresponding to the st_shndx field of each local symbol.
11153 The global hash table entry for the global symbols can be found
11154 via elf_sym_hashes (input_bfd).
11156 When generating relocatable output, this function must handle
11157 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11158 going to be the section symbol corresponding to the output
11159 section, which means that the addend must be adjusted
11163 ppc64_elf_relocate_section (bfd
*output_bfd
,
11164 struct bfd_link_info
*info
,
11166 asection
*input_section
,
11167 bfd_byte
*contents
,
11168 Elf_Internal_Rela
*relocs
,
11169 Elf_Internal_Sym
*local_syms
,
11170 asection
**local_sections
)
11172 struct ppc_link_hash_table
*htab
;
11173 Elf_Internal_Shdr
*symtab_hdr
;
11174 struct elf_link_hash_entry
**sym_hashes
;
11175 Elf_Internal_Rela
*rel
;
11176 Elf_Internal_Rela
*relend
;
11177 Elf_Internal_Rela outrel
;
11179 struct got_entry
**local_got_ents
;
11181 bfd_boolean ret
= TRUE
;
11182 bfd_boolean is_opd
;
11183 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11184 bfd_boolean is_power4
= FALSE
;
11185 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11187 /* Initialize howto table if needed. */
11188 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11191 htab
= ppc_hash_table (info
);
11195 /* Don't relocate stub sections. */
11196 if (input_section
->owner
== htab
->stub_bfd
)
11199 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11201 local_got_ents
= elf_local_got_ents (input_bfd
);
11202 TOCstart
= elf_gp (output_bfd
);
11203 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11204 sym_hashes
= elf_sym_hashes (input_bfd
);
11205 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11208 relend
= relocs
+ input_section
->reloc_count
;
11209 for (; rel
< relend
; rel
++)
11211 enum elf_ppc64_reloc_type r_type
;
11212 bfd_vma addend
, orig_addend
;
11213 bfd_reloc_status_type r
;
11214 Elf_Internal_Sym
*sym
;
11216 struct elf_link_hash_entry
*h_elf
;
11217 struct ppc_link_hash_entry
*h
;
11218 struct ppc_link_hash_entry
*fdh
;
11219 const char *sym_name
;
11220 unsigned long r_symndx
, toc_symndx
;
11221 bfd_vma toc_addend
;
11222 unsigned char tls_mask
, tls_gd
, tls_type
;
11223 unsigned char sym_type
;
11224 bfd_vma relocation
;
11225 bfd_boolean unresolved_reloc
;
11226 bfd_boolean warned
;
11227 unsigned long insn
, mask
;
11228 struct ppc_stub_hash_entry
*stub_entry
;
11229 bfd_vma max_br_offset
;
11232 r_type
= ELF64_R_TYPE (rel
->r_info
);
11233 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11235 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11236 symbol of the previous ADDR64 reloc. The symbol gives us the
11237 proper TOC base to use. */
11238 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11240 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11242 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11248 unresolved_reloc
= FALSE
;
11250 orig_addend
= rel
->r_addend
;
11252 if (r_symndx
< symtab_hdr
->sh_info
)
11254 /* It's a local symbol. */
11255 struct _opd_sec_data
*opd
;
11257 sym
= local_syms
+ r_symndx
;
11258 sec
= local_sections
[r_symndx
];
11259 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11260 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11261 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11262 opd
= get_opd_info (sec
);
11263 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11265 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11270 /* If this is a relocation against the opd section sym
11271 and we have edited .opd, adjust the reloc addend so
11272 that ld -r and ld --emit-relocs output is correct.
11273 If it is a reloc against some other .opd symbol,
11274 then the symbol value will be adjusted later. */
11275 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11276 rel
->r_addend
+= adjust
;
11278 relocation
+= adjust
;
11284 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11285 r_symndx
, symtab_hdr
, sym_hashes
,
11286 h_elf
, sec
, relocation
,
11287 unresolved_reloc
, warned
);
11288 sym_name
= h_elf
->root
.root
.string
;
11289 sym_type
= h_elf
->type
;
11291 h
= (struct ppc_link_hash_entry
*) h_elf
;
11293 if (sec
!= NULL
&& elf_discarded_section (sec
))
11295 /* For relocs against symbols from removed linkonce sections,
11296 or sections discarded by a linker script, we just want the
11297 section contents zeroed. Avoid any special processing. */
11298 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
11299 contents
+ rel
->r_offset
);
11305 if (info
->relocatable
)
11308 /* TLS optimizations. Replace instruction sequences and relocs
11309 based on information we collected in tls_optimize. We edit
11310 RELOCS so that --emit-relocs will output something sensible
11311 for the final instruction stream. */
11316 tls_mask
= h
->tls_mask
;
11317 else if (local_got_ents
!= NULL
)
11319 struct plt_entry
**local_plt
= (struct plt_entry
**)
11320 (local_got_ents
+ symtab_hdr
->sh_info
);
11321 unsigned char *lgot_masks
= (unsigned char *)
11322 (local_plt
+ symtab_hdr
->sh_info
);
11323 tls_mask
= lgot_masks
[r_symndx
];
11326 && (r_type
== R_PPC64_TLS
11327 || r_type
== R_PPC64_TLSGD
11328 || r_type
== R_PPC64_TLSLD
))
11330 /* Check for toc tls entries. */
11331 unsigned char *toc_tls
;
11333 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11334 &local_syms
, rel
, input_bfd
))
11338 tls_mask
= *toc_tls
;
11341 /* Check that tls relocs are used with tls syms, and non-tls
11342 relocs are used with non-tls syms. */
11344 && r_type
!= R_PPC64_NONE
11346 || h
->elf
.root
.type
== bfd_link_hash_defined
11347 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11348 && (IS_PPC64_TLS_RELOC (r_type
)
11349 != (sym_type
== STT_TLS
11350 || (sym_type
== STT_SECTION
11351 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11354 && (r_type
== R_PPC64_TLS
11355 || r_type
== R_PPC64_TLSGD
11356 || r_type
== R_PPC64_TLSLD
))
11357 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11360 (*_bfd_error_handler
)
11361 (!IS_PPC64_TLS_RELOC (r_type
)
11362 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11363 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11366 (long) rel
->r_offset
,
11367 ppc64_elf_howto_table
[r_type
]->name
,
11371 /* Ensure reloc mapping code below stays sane. */
11372 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11373 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11374 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11375 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11376 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11377 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11378 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11379 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11380 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11381 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11389 case R_PPC64_TOC16
:
11390 case R_PPC64_TOC16_LO
:
11391 case R_PPC64_TOC16_DS
:
11392 case R_PPC64_TOC16_LO_DS
:
11394 /* Check for toc tls entries. */
11395 unsigned char *toc_tls
;
11398 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11399 &local_syms
, rel
, input_bfd
);
11405 tls_mask
= *toc_tls
;
11406 if (r_type
== R_PPC64_TOC16_DS
11407 || r_type
== R_PPC64_TOC16_LO_DS
)
11410 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11415 /* If we found a GD reloc pair, then we might be
11416 doing a GD->IE transition. */
11419 tls_gd
= TLS_TPRELGD
;
11420 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11423 else if (retval
== 3)
11425 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11433 case R_PPC64_GOT_TPREL16_DS
:
11434 case R_PPC64_GOT_TPREL16_LO_DS
:
11436 && (tls_mask
& TLS_TPREL
) == 0)
11439 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11441 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11442 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11443 r_type
= R_PPC64_TPREL16_HA
;
11444 if (toc_symndx
!= 0)
11446 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11447 rel
->r_addend
= toc_addend
;
11448 /* We changed the symbol. Start over in order to
11449 get h, sym, sec etc. right. */
11454 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11460 && (tls_mask
& TLS_TPREL
) == 0)
11462 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11463 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11466 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11467 /* Was PPC64_TLS which sits on insn boundary, now
11468 PPC64_TPREL16_LO which is at low-order half-word. */
11469 rel
->r_offset
+= d_offset
;
11470 r_type
= R_PPC64_TPREL16_LO
;
11471 if (toc_symndx
!= 0)
11473 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11474 rel
->r_addend
= toc_addend
;
11475 /* We changed the symbol. Start over in order to
11476 get h, sym, sec etc. right. */
11481 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11485 case R_PPC64_GOT_TLSGD16_HI
:
11486 case R_PPC64_GOT_TLSGD16_HA
:
11487 tls_gd
= TLS_TPRELGD
;
11488 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11492 case R_PPC64_GOT_TLSLD16_HI
:
11493 case R_PPC64_GOT_TLSLD16_HA
:
11494 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11497 if ((tls_mask
& tls_gd
) != 0)
11498 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11499 + R_PPC64_GOT_TPREL16_DS
);
11502 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11503 rel
->r_offset
-= d_offset
;
11504 r_type
= R_PPC64_NONE
;
11506 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11510 case R_PPC64_GOT_TLSGD16
:
11511 case R_PPC64_GOT_TLSGD16_LO
:
11512 tls_gd
= TLS_TPRELGD
;
11513 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11517 case R_PPC64_GOT_TLSLD16
:
11518 case R_PPC64_GOT_TLSLD16_LO
:
11519 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11521 unsigned int insn1
, insn2
, insn3
;
11525 offset
= (bfd_vma
) -1;
11526 /* If not using the newer R_PPC64_TLSGD/LD to mark
11527 __tls_get_addr calls, we must trust that the call
11528 stays with its arg setup insns, ie. that the next
11529 reloc is the __tls_get_addr call associated with
11530 the current reloc. Edit both insns. */
11531 if (input_section
->has_tls_get_addr_call
11532 && rel
+ 1 < relend
11533 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
11534 htab
->tls_get_addr
,
11535 htab
->tls_get_addr_fd
))
11536 offset
= rel
[1].r_offset
;
11537 if ((tls_mask
& tls_gd
) != 0)
11540 insn1
= bfd_get_32 (output_bfd
,
11541 contents
+ rel
->r_offset
- d_offset
);
11542 insn1
&= (1 << 26) - (1 << 2);
11543 insn1
|= 58 << 26; /* ld */
11544 insn2
= 0x7c636a14; /* add 3,3,13 */
11545 if (offset
!= (bfd_vma
) -1)
11546 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11547 if ((tls_mask
& TLS_EXPLICIT
) == 0)
11548 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11549 + R_PPC64_GOT_TPREL16_DS
);
11551 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
11552 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11557 insn1
= 0x3c6d0000; /* addis 3,13,0 */
11558 insn2
= 0x38630000; /* addi 3,3,0 */
11561 /* Was an LD reloc. */
11563 sec
= local_sections
[toc_symndx
];
11565 r_symndx
< symtab_hdr
->sh_info
;
11567 if (local_sections
[r_symndx
] == sec
)
11569 if (r_symndx
>= symtab_hdr
->sh_info
)
11571 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11573 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11574 + sec
->output_offset
11575 + sec
->output_section
->vma
);
11577 else if (toc_symndx
!= 0)
11579 r_symndx
= toc_symndx
;
11580 rel
->r_addend
= toc_addend
;
11582 r_type
= R_PPC64_TPREL16_HA
;
11583 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11584 if (offset
!= (bfd_vma
) -1)
11586 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
11587 R_PPC64_TPREL16_LO
);
11588 rel
[1].r_offset
= offset
+ d_offset
;
11589 rel
[1].r_addend
= rel
->r_addend
;
11592 bfd_put_32 (output_bfd
, insn1
,
11593 contents
+ rel
->r_offset
- d_offset
);
11594 if (offset
!= (bfd_vma
) -1)
11596 insn3
= bfd_get_32 (output_bfd
,
11597 contents
+ offset
+ 4);
11599 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11601 rel
[1].r_offset
+= 4;
11602 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11605 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11607 if ((tls_mask
& tls_gd
) == 0
11608 && (tls_gd
== 0 || toc_symndx
!= 0))
11610 /* We changed the symbol. Start over in order
11611 to get h, sym, sec etc. right. */
11618 case R_PPC64_TLSGD
:
11619 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11621 unsigned int insn2
, insn3
;
11622 bfd_vma offset
= rel
->r_offset
;
11624 if ((tls_mask
& TLS_TPRELGD
) != 0)
11627 r_type
= R_PPC64_NONE
;
11628 insn2
= 0x7c636a14; /* add 3,3,13 */
11633 if (toc_symndx
!= 0)
11635 r_symndx
= toc_symndx
;
11636 rel
->r_addend
= toc_addend
;
11638 r_type
= R_PPC64_TPREL16_LO
;
11639 rel
->r_offset
= offset
+ d_offset
;
11640 insn2
= 0x38630000; /* addi 3,3,0 */
11642 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11643 /* Zap the reloc on the _tls_get_addr call too. */
11644 BFD_ASSERT (offset
== rel
[1].r_offset
);
11645 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11646 insn3
= bfd_get_32 (output_bfd
,
11647 contents
+ offset
+ 4);
11649 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11651 rel
->r_offset
+= 4;
11652 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11655 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11656 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
11664 case R_PPC64_TLSLD
:
11665 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11667 unsigned int insn2
, insn3
;
11668 bfd_vma offset
= rel
->r_offset
;
11671 sec
= local_sections
[toc_symndx
];
11673 r_symndx
< symtab_hdr
->sh_info
;
11675 if (local_sections
[r_symndx
] == sec
)
11677 if (r_symndx
>= symtab_hdr
->sh_info
)
11679 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11681 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11682 + sec
->output_offset
11683 + sec
->output_section
->vma
);
11685 r_type
= R_PPC64_TPREL16_LO
;
11686 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11687 rel
->r_offset
= offset
+ d_offset
;
11688 /* Zap the reloc on the _tls_get_addr call too. */
11689 BFD_ASSERT (offset
== rel
[1].r_offset
);
11690 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11691 insn2
= 0x38630000; /* addi 3,3,0 */
11692 insn3
= bfd_get_32 (output_bfd
,
11693 contents
+ offset
+ 4);
11695 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11697 rel
->r_offset
+= 4;
11698 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11701 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11707 case R_PPC64_DTPMOD64
:
11708 if (rel
+ 1 < relend
11709 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
11710 && rel
[1].r_offset
== rel
->r_offset
+ 8)
11712 if ((tls_mask
& TLS_GD
) == 0)
11714 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
11715 if ((tls_mask
& TLS_TPRELGD
) != 0)
11716 r_type
= R_PPC64_TPREL64
;
11719 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
11720 r_type
= R_PPC64_NONE
;
11722 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11727 if ((tls_mask
& TLS_LD
) == 0)
11729 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
11730 r_type
= R_PPC64_NONE
;
11731 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11736 case R_PPC64_TPREL64
:
11737 if ((tls_mask
& TLS_TPREL
) == 0)
11739 r_type
= R_PPC64_NONE
;
11740 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11745 /* Handle other relocations that tweak non-addend part of insn. */
11747 max_br_offset
= 1 << 25;
11748 addend
= rel
->r_addend
;
11754 /* Branch taken prediction relocations. */
11755 case R_PPC64_ADDR14_BRTAKEN
:
11756 case R_PPC64_REL14_BRTAKEN
:
11757 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11760 /* Branch not taken prediction relocations. */
11761 case R_PPC64_ADDR14_BRNTAKEN
:
11762 case R_PPC64_REL14_BRNTAKEN
:
11763 insn
|= bfd_get_32 (output_bfd
,
11764 contents
+ rel
->r_offset
) & ~(0x01 << 21);
11767 case R_PPC64_REL14
:
11768 max_br_offset
= 1 << 15;
11771 case R_PPC64_REL24
:
11772 /* Calls to functions with a different TOC, such as calls to
11773 shared objects, need to alter the TOC pointer. This is
11774 done using a linkage stub. A REL24 branching to these
11775 linkage stubs needs to be followed by a nop, as the nop
11776 will be replaced with an instruction to restore the TOC
11782 && h
->oh
->is_func_descriptor
)
11783 fdh
= ppc_follow_link (h
->oh
);
11785 && fdh
->elf
.plt
.plist
!= NULL
)
11787 && sec
->output_section
!= NULL
11788 && sec
->id
<= htab
->top_id
11789 && (htab
->stub_group
[sec
->id
].toc_off
11790 != htab
->stub_group
[input_section
->id
].toc_off
))
11792 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
11793 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
11794 rel
, htab
)) != NULL
11795 && (stub_entry
->stub_type
== ppc_stub_plt_call
11796 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
11797 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
11799 bfd_boolean can_plt_call
= FALSE
;
11801 if (rel
->r_offset
+ 8 <= input_section
->size
)
11804 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
11806 || nop
== CROR_151515
|| nop
== CROR_313131
)
11809 && (h
== htab
->tls_get_addr_fd
11810 || h
== htab
->tls_get_addr
)
11811 && !htab
->no_tls_get_addr_opt
)
11813 /* Special stub used, leave nop alone. */
11816 bfd_put_32 (input_bfd
, LD_R2_40R1
,
11817 contents
+ rel
->r_offset
+ 4);
11818 can_plt_call
= TRUE
;
11824 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
11826 /* If this is a plain branch rather than a branch
11827 and link, don't require a nop. However, don't
11828 allow tail calls in a shared library as they
11829 will result in r2 being corrupted. */
11831 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
11832 if (info
->executable
&& (br
& 1) == 0)
11833 can_plt_call
= TRUE
;
11838 && strcmp (h
->elf
.root
.root
.string
,
11839 ".__libc_start_main") == 0)
11841 /* Allow crt1 branch to go via a toc adjusting stub. */
11842 can_plt_call
= TRUE
;
11846 if (strcmp (input_section
->output_section
->name
,
11848 || strcmp (input_section
->output_section
->name
,
11850 (*_bfd_error_handler
)
11851 (_("%B(%A+0x%lx): automatic multiple TOCs "
11852 "not supported using your crt files; "
11853 "recompile with -mminimal-toc or upgrade gcc"),
11856 (long) rel
->r_offset
);
11858 (*_bfd_error_handler
)
11859 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
11860 "does not allow automatic multiple TOCs; "
11861 "recompile with -mminimal-toc or "
11862 "-fno-optimize-sibling-calls, "
11863 "or make `%s' extern"),
11866 (long) rel
->r_offset
,
11869 bfd_set_error (bfd_error_bad_value
);
11875 && stub_entry
->stub_type
== ppc_stub_plt_call
)
11876 unresolved_reloc
= FALSE
;
11879 if (stub_entry
== NULL
11880 && get_opd_info (sec
) != NULL
)
11882 /* The branch destination is the value of the opd entry. */
11883 bfd_vma off
= (relocation
+ addend
11884 - sec
->output_section
->vma
11885 - sec
->output_offset
);
11886 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
11887 if (dest
!= (bfd_vma
) -1)
11894 /* If the branch is out of reach we ought to have a long
11896 from
= (rel
->r_offset
11897 + input_section
->output_offset
11898 + input_section
->output_section
->vma
);
11900 if (stub_entry
== NULL
11901 && (relocation
+ addend
- from
+ max_br_offset
11902 >= 2 * max_br_offset
)
11903 && r_type
!= R_PPC64_ADDR14_BRTAKEN
11904 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
11905 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
11908 if (stub_entry
!= NULL
)
11910 /* Munge up the value and addend so that we call the stub
11911 rather than the procedure directly. */
11912 relocation
= (stub_entry
->stub_offset
11913 + stub_entry
->stub_sec
->output_offset
11914 + stub_entry
->stub_sec
->output_section
->vma
);
11922 /* Set 'a' bit. This is 0b00010 in BO field for branch
11923 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11924 for branch on CTR insns (BO == 1a00t or 1a01t). */
11925 if ((insn
& (0x14 << 21)) == (0x04 << 21))
11926 insn
|= 0x02 << 21;
11927 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
11928 insn
|= 0x08 << 21;
11934 /* Invert 'y' bit if not the default. */
11935 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
11936 insn
^= 0x01 << 21;
11939 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11942 /* NOP out calls to undefined weak functions.
11943 We can thus call a weak function without first
11944 checking whether the function is defined. */
11946 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11947 && h
->elf
.dynindx
== -1
11948 && r_type
== R_PPC64_REL24
11952 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11958 /* Set `addend'. */
11963 (*_bfd_error_handler
)
11964 (_("%B: unknown relocation type %d for symbol %s"),
11965 input_bfd
, (int) r_type
, sym_name
);
11967 bfd_set_error (bfd_error_bad_value
);
11973 case R_PPC64_TLSGD
:
11974 case R_PPC64_TLSLD
:
11975 case R_PPC64_GNU_VTINHERIT
:
11976 case R_PPC64_GNU_VTENTRY
:
11979 /* GOT16 relocations. Like an ADDR16 using the symbol's
11980 address in the GOT as relocation value instead of the
11981 symbol's value itself. Also, create a GOT entry for the
11982 symbol and put the symbol value there. */
11983 case R_PPC64_GOT_TLSGD16
:
11984 case R_PPC64_GOT_TLSGD16_LO
:
11985 case R_PPC64_GOT_TLSGD16_HI
:
11986 case R_PPC64_GOT_TLSGD16_HA
:
11987 tls_type
= TLS_TLS
| TLS_GD
;
11990 case R_PPC64_GOT_TLSLD16
:
11991 case R_PPC64_GOT_TLSLD16_LO
:
11992 case R_PPC64_GOT_TLSLD16_HI
:
11993 case R_PPC64_GOT_TLSLD16_HA
:
11994 tls_type
= TLS_TLS
| TLS_LD
;
11997 case R_PPC64_GOT_TPREL16_DS
:
11998 case R_PPC64_GOT_TPREL16_LO_DS
:
11999 case R_PPC64_GOT_TPREL16_HI
:
12000 case R_PPC64_GOT_TPREL16_HA
:
12001 tls_type
= TLS_TLS
| TLS_TPREL
;
12004 case R_PPC64_GOT_DTPREL16_DS
:
12005 case R_PPC64_GOT_DTPREL16_LO_DS
:
12006 case R_PPC64_GOT_DTPREL16_HI
:
12007 case R_PPC64_GOT_DTPREL16_HA
:
12008 tls_type
= TLS_TLS
| TLS_DTPREL
;
12011 case R_PPC64_GOT16
:
12012 case R_PPC64_GOT16_LO
:
12013 case R_PPC64_GOT16_HI
:
12014 case R_PPC64_GOT16_HA
:
12015 case R_PPC64_GOT16_DS
:
12016 case R_PPC64_GOT16_LO_DS
:
12019 /* Relocation is to the entry for this symbol in the global
12024 unsigned long indx
= 0;
12025 struct got_entry
*ent
;
12027 if (tls_type
== (TLS_TLS
| TLS_LD
)
12029 || !h
->elf
.def_dynamic
))
12030 ent
= ppc64_tlsld_got (input_bfd
);
12036 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12037 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12040 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
12041 /* This is actually a static link, or it is a
12042 -Bsymbolic link and the symbol is defined
12043 locally, or the symbol was forced to be local
12044 because of a version file. */
12048 indx
= h
->elf
.dynindx
;
12049 unresolved_reloc
= FALSE
;
12051 ent
= h
->elf
.got
.glist
;
12055 if (local_got_ents
== NULL
)
12057 ent
= local_got_ents
[r_symndx
];
12060 for (; ent
!= NULL
; ent
= ent
->next
)
12061 if (ent
->addend
== orig_addend
12062 && ent
->owner
== input_bfd
12063 && ent
->tls_type
== tls_type
)
12069 if (ent
->is_indirect
)
12070 ent
= ent
->got
.ent
;
12071 offp
= &ent
->got
.offset
;
12072 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12076 /* The offset must always be a multiple of 8. We use the
12077 least significant bit to record whether we have already
12078 processed this entry. */
12080 if ((off
& 1) != 0)
12084 /* Generate relocs for the dynamic linker, except in
12085 the case of TLSLD where we'll use one entry per
12093 ? h
->elf
.type
== STT_GNU_IFUNC
12094 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12095 if ((info
->shared
|| indx
!= 0)
12097 || (tls_type
== (TLS_TLS
| TLS_LD
)
12098 && !h
->elf
.def_dynamic
)
12099 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12100 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12101 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12103 relgot
= htab
->reliplt
;
12104 if (relgot
!= NULL
)
12106 outrel
.r_offset
= (got
->output_section
->vma
12107 + got
->output_offset
12109 outrel
.r_addend
= addend
;
12110 if (tls_type
& (TLS_LD
| TLS_GD
))
12112 outrel
.r_addend
= 0;
12113 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12114 if (tls_type
== (TLS_TLS
| TLS_GD
))
12116 loc
= relgot
->contents
;
12117 loc
+= (relgot
->reloc_count
++
12118 * sizeof (Elf64_External_Rela
));
12119 bfd_elf64_swap_reloca_out (output_bfd
,
12121 outrel
.r_offset
+= 8;
12122 outrel
.r_addend
= addend
;
12124 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12127 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12128 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12129 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12130 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12131 else if (indx
!= 0)
12132 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12136 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12138 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12140 /* Write the .got section contents for the sake
12142 loc
= got
->contents
+ off
;
12143 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12147 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12149 outrel
.r_addend
+= relocation
;
12150 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12151 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12153 loc
= relgot
->contents
;
12154 loc
+= (relgot
->reloc_count
++
12155 * sizeof (Elf64_External_Rela
));
12156 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12159 /* Init the .got section contents here if we're not
12160 emitting a reloc. */
12163 relocation
+= addend
;
12164 if (tls_type
== (TLS_TLS
| TLS_LD
))
12166 else if (tls_type
!= 0)
12168 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12169 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12170 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12172 if (tls_type
== (TLS_TLS
| TLS_GD
))
12174 bfd_put_64 (output_bfd
, relocation
,
12175 got
->contents
+ off
+ 8);
12180 bfd_put_64 (output_bfd
, relocation
,
12181 got
->contents
+ off
);
12185 if (off
>= (bfd_vma
) -2)
12188 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12189 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12193 case R_PPC64_PLT16_HA
:
12194 case R_PPC64_PLT16_HI
:
12195 case R_PPC64_PLT16_LO
:
12196 case R_PPC64_PLT32
:
12197 case R_PPC64_PLT64
:
12198 /* Relocation is to the entry for this symbol in the
12199 procedure linkage table. */
12201 /* Resolve a PLT reloc against a local symbol directly,
12202 without using the procedure linkage table. */
12206 /* It's possible that we didn't make a PLT entry for this
12207 symbol. This happens when statically linking PIC code,
12208 or when using -Bsymbolic. Go find a match if there is a
12210 if (htab
->plt
!= NULL
)
12212 struct plt_entry
*ent
;
12213 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12214 if (ent
->addend
== orig_addend
12215 && ent
->plt
.offset
!= (bfd_vma
) -1)
12217 relocation
= (htab
->plt
->output_section
->vma
12218 + htab
->plt
->output_offset
12219 + ent
->plt
.offset
);
12220 unresolved_reloc
= FALSE
;
12226 /* Relocation value is TOC base. */
12227 relocation
= TOCstart
;
12229 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12230 else if (unresolved_reloc
)
12232 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12233 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12235 unresolved_reloc
= TRUE
;
12238 /* TOC16 relocs. We want the offset relative to the TOC base,
12239 which is the address of the start of the TOC plus 0x8000.
12240 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12242 case R_PPC64_TOC16
:
12243 case R_PPC64_TOC16_LO
:
12244 case R_PPC64_TOC16_HI
:
12245 case R_PPC64_TOC16_DS
:
12246 case R_PPC64_TOC16_LO_DS
:
12247 case R_PPC64_TOC16_HA
:
12248 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12251 /* Relocate against the beginning of the section. */
12252 case R_PPC64_SECTOFF
:
12253 case R_PPC64_SECTOFF_LO
:
12254 case R_PPC64_SECTOFF_HI
:
12255 case R_PPC64_SECTOFF_DS
:
12256 case R_PPC64_SECTOFF_LO_DS
:
12257 case R_PPC64_SECTOFF_HA
:
12259 addend
-= sec
->output_section
->vma
;
12262 case R_PPC64_REL16
:
12263 case R_PPC64_REL16_LO
:
12264 case R_PPC64_REL16_HI
:
12265 case R_PPC64_REL16_HA
:
12268 case R_PPC64_REL14
:
12269 case R_PPC64_REL14_BRNTAKEN
:
12270 case R_PPC64_REL14_BRTAKEN
:
12271 case R_PPC64_REL24
:
12274 case R_PPC64_TPREL16
:
12275 case R_PPC64_TPREL16_LO
:
12276 case R_PPC64_TPREL16_HI
:
12277 case R_PPC64_TPREL16_HA
:
12278 case R_PPC64_TPREL16_DS
:
12279 case R_PPC64_TPREL16_LO_DS
:
12280 case R_PPC64_TPREL16_HIGHER
:
12281 case R_PPC64_TPREL16_HIGHERA
:
12282 case R_PPC64_TPREL16_HIGHEST
:
12283 case R_PPC64_TPREL16_HIGHESTA
:
12285 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12286 && h
->elf
.dynindx
== -1)
12288 /* Make this relocation against an undefined weak symbol
12289 resolve to zero. This is really just a tweak, since
12290 code using weak externs ought to check that they are
12291 defined before using them. */
12292 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12294 insn
= bfd_get_32 (output_bfd
, p
);
12295 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12297 bfd_put_32 (output_bfd
, insn
, p
);
12300 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12302 /* The TPREL16 relocs shouldn't really be used in shared
12303 libs as they will result in DT_TEXTREL being set, but
12304 support them anyway. */
12308 case R_PPC64_DTPREL16
:
12309 case R_PPC64_DTPREL16_LO
:
12310 case R_PPC64_DTPREL16_HI
:
12311 case R_PPC64_DTPREL16_HA
:
12312 case R_PPC64_DTPREL16_DS
:
12313 case R_PPC64_DTPREL16_LO_DS
:
12314 case R_PPC64_DTPREL16_HIGHER
:
12315 case R_PPC64_DTPREL16_HIGHERA
:
12316 case R_PPC64_DTPREL16_HIGHEST
:
12317 case R_PPC64_DTPREL16_HIGHESTA
:
12318 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12321 case R_PPC64_DTPMOD64
:
12326 case R_PPC64_TPREL64
:
12327 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12330 case R_PPC64_DTPREL64
:
12331 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12334 /* Relocations that may need to be propagated if this is a
12336 case R_PPC64_REL30
:
12337 case R_PPC64_REL32
:
12338 case R_PPC64_REL64
:
12339 case R_PPC64_ADDR14
:
12340 case R_PPC64_ADDR14_BRNTAKEN
:
12341 case R_PPC64_ADDR14_BRTAKEN
:
12342 case R_PPC64_ADDR16
:
12343 case R_PPC64_ADDR16_DS
:
12344 case R_PPC64_ADDR16_HA
:
12345 case R_PPC64_ADDR16_HI
:
12346 case R_PPC64_ADDR16_HIGHER
:
12347 case R_PPC64_ADDR16_HIGHERA
:
12348 case R_PPC64_ADDR16_HIGHEST
:
12349 case R_PPC64_ADDR16_HIGHESTA
:
12350 case R_PPC64_ADDR16_LO
:
12351 case R_PPC64_ADDR16_LO_DS
:
12352 case R_PPC64_ADDR24
:
12353 case R_PPC64_ADDR32
:
12354 case R_PPC64_ADDR64
:
12355 case R_PPC64_UADDR16
:
12356 case R_PPC64_UADDR32
:
12357 case R_PPC64_UADDR64
:
12359 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12362 if (NO_OPD_RELOCS
&& is_opd
)
12367 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12368 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12369 && (must_be_dyn_reloc (info
, r_type
)
12370 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12371 || (ELIMINATE_COPY_RELOCS
12374 && h
->elf
.dynindx
!= -1
12375 && !h
->elf
.non_got_ref
12376 && !h
->elf
.def_regular
)
12379 ? h
->elf
.type
== STT_GNU_IFUNC
12380 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12382 bfd_boolean skip
, relocate
;
12386 /* When generating a dynamic object, these relocations
12387 are copied into the output file to be resolved at run
12393 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12394 input_section
, rel
->r_offset
);
12395 if (out_off
== (bfd_vma
) -1)
12397 else if (out_off
== (bfd_vma
) -2)
12398 skip
= TRUE
, relocate
= TRUE
;
12399 out_off
+= (input_section
->output_section
->vma
12400 + input_section
->output_offset
);
12401 outrel
.r_offset
= out_off
;
12402 outrel
.r_addend
= rel
->r_addend
;
12404 /* Optimize unaligned reloc use. */
12405 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12406 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12407 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12408 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12409 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12410 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12411 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12412 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12413 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12416 memset (&outrel
, 0, sizeof outrel
);
12417 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
12419 && r_type
!= R_PPC64_TOC
)
12420 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12423 /* This symbol is local, or marked to become local,
12424 or this is an opd section reloc which must point
12425 at a local function. */
12426 outrel
.r_addend
+= relocation
;
12427 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12429 if (is_opd
&& h
!= NULL
)
12431 /* Lie about opd entries. This case occurs
12432 when building shared libraries and we
12433 reference a function in another shared
12434 lib. The same thing happens for a weak
12435 definition in an application that's
12436 overridden by a strong definition in a
12437 shared lib. (I believe this is a generic
12438 bug in binutils handling of weak syms.)
12439 In these cases we won't use the opd
12440 entry in this lib. */
12441 unresolved_reloc
= FALSE
;
12444 && r_type
== R_PPC64_ADDR64
12446 ? h
->elf
.type
== STT_GNU_IFUNC
12447 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12448 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12451 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12453 /* We need to relocate .opd contents for ld.so.
12454 Prelink also wants simple and consistent rules
12455 for relocs. This make all RELATIVE relocs have
12456 *r_offset equal to r_addend. */
12465 ? h
->elf
.type
== STT_GNU_IFUNC
12466 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12468 (*_bfd_error_handler
)
12469 (_("%B(%A+0x%lx): relocation %s for indirect "
12470 "function %s unsupported"),
12473 (long) rel
->r_offset
,
12474 ppc64_elf_howto_table
[r_type
]->name
,
12478 else if (r_symndx
== 0 || bfd_is_abs_section (sec
))
12480 else if (sec
== NULL
|| sec
->owner
== NULL
)
12482 bfd_set_error (bfd_error_bad_value
);
12489 osec
= sec
->output_section
;
12490 indx
= elf_section_data (osec
)->dynindx
;
12494 if ((osec
->flags
& SEC_READONLY
) == 0
12495 && htab
->elf
.data_index_section
!= NULL
)
12496 osec
= htab
->elf
.data_index_section
;
12498 osec
= htab
->elf
.text_index_section
;
12499 indx
= elf_section_data (osec
)->dynindx
;
12501 BFD_ASSERT (indx
!= 0);
12503 /* We are turning this relocation into one
12504 against a section symbol, so subtract out
12505 the output section's address but not the
12506 offset of the input section in the output
12508 outrel
.r_addend
-= osec
->vma
;
12511 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
12515 sreloc
= elf_section_data (input_section
)->sreloc
;
12516 if (!htab
->elf
.dynamic_sections_created
)
12517 sreloc
= htab
->reliplt
;
12518 if (sreloc
== NULL
)
12521 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
12524 loc
= sreloc
->contents
;
12525 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12526 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12528 /* If this reloc is against an external symbol, it will
12529 be computed at runtime, so there's no need to do
12530 anything now. However, for the sake of prelink ensure
12531 that the section contents are a known value. */
12534 unresolved_reloc
= FALSE
;
12535 /* The value chosen here is quite arbitrary as ld.so
12536 ignores section contents except for the special
12537 case of .opd where the contents might be accessed
12538 before relocation. Choose zero, as that won't
12539 cause reloc overflow. */
12542 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12543 to improve backward compatibility with older
12545 if (r_type
== R_PPC64_ADDR64
)
12546 addend
= outrel
.r_addend
;
12547 /* Adjust pc_relative relocs to have zero in *r_offset. */
12548 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
12549 addend
= (input_section
->output_section
->vma
12550 + input_section
->output_offset
12557 case R_PPC64_GLOB_DAT
:
12558 case R_PPC64_JMP_SLOT
:
12559 case R_PPC64_JMP_IREL
:
12560 case R_PPC64_RELATIVE
:
12561 /* We shouldn't ever see these dynamic relocs in relocatable
12563 /* Fall through. */
12565 case R_PPC64_PLTGOT16
:
12566 case R_PPC64_PLTGOT16_DS
:
12567 case R_PPC64_PLTGOT16_HA
:
12568 case R_PPC64_PLTGOT16_HI
:
12569 case R_PPC64_PLTGOT16_LO
:
12570 case R_PPC64_PLTGOT16_LO_DS
:
12571 case R_PPC64_PLTREL32
:
12572 case R_PPC64_PLTREL64
:
12573 /* These ones haven't been implemented yet. */
12575 (*_bfd_error_handler
)
12576 (_("%B: relocation %s is not supported for symbol %s."),
12578 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
12580 bfd_set_error (bfd_error_invalid_operation
);
12585 /* Do any further special processing. */
12591 case R_PPC64_ADDR16_HA
:
12592 case R_PPC64_REL16_HA
:
12593 case R_PPC64_ADDR16_HIGHERA
:
12594 case R_PPC64_ADDR16_HIGHESTA
:
12595 case R_PPC64_TOC16_HA
:
12596 case R_PPC64_SECTOFF_HA
:
12597 case R_PPC64_TPREL16_HA
:
12598 case R_PPC64_DTPREL16_HA
:
12599 case R_PPC64_TPREL16_HIGHER
:
12600 case R_PPC64_TPREL16_HIGHERA
:
12601 case R_PPC64_TPREL16_HIGHEST
:
12602 case R_PPC64_TPREL16_HIGHESTA
:
12603 case R_PPC64_DTPREL16_HIGHER
:
12604 case R_PPC64_DTPREL16_HIGHERA
:
12605 case R_PPC64_DTPREL16_HIGHEST
:
12606 case R_PPC64_DTPREL16_HIGHESTA
:
12607 /* It's just possible that this symbol is a weak symbol
12608 that's not actually defined anywhere. In that case,
12609 'sec' would be NULL, and we should leave the symbol
12610 alone (it will be set to zero elsewhere in the link). */
12615 case R_PPC64_GOT16_HA
:
12616 case R_PPC64_PLTGOT16_HA
:
12617 case R_PPC64_PLT16_HA
:
12618 case R_PPC64_GOT_TLSGD16_HA
:
12619 case R_PPC64_GOT_TLSLD16_HA
:
12620 case R_PPC64_GOT_TPREL16_HA
:
12621 case R_PPC64_GOT_DTPREL16_HA
:
12622 /* Add 0x10000 if sign bit in 0:15 is set.
12623 Bits 0:15 are not used. */
12627 case R_PPC64_ADDR16_DS
:
12628 case R_PPC64_ADDR16_LO_DS
:
12629 case R_PPC64_GOT16_DS
:
12630 case R_PPC64_GOT16_LO_DS
:
12631 case R_PPC64_PLT16_LO_DS
:
12632 case R_PPC64_SECTOFF_DS
:
12633 case R_PPC64_SECTOFF_LO_DS
:
12634 case R_PPC64_TOC16_DS
:
12635 case R_PPC64_TOC16_LO_DS
:
12636 case R_PPC64_PLTGOT16_DS
:
12637 case R_PPC64_PLTGOT16_LO_DS
:
12638 case R_PPC64_GOT_TPREL16_DS
:
12639 case R_PPC64_GOT_TPREL16_LO_DS
:
12640 case R_PPC64_GOT_DTPREL16_DS
:
12641 case R_PPC64_GOT_DTPREL16_LO_DS
:
12642 case R_PPC64_TPREL16_DS
:
12643 case R_PPC64_TPREL16_LO_DS
:
12644 case R_PPC64_DTPREL16_DS
:
12645 case R_PPC64_DTPREL16_LO_DS
:
12646 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
12648 /* If this reloc is against an lq insn, then the value must be
12649 a multiple of 16. This is somewhat of a hack, but the
12650 "correct" way to do this by defining _DQ forms of all the
12651 _DS relocs bloats all reloc switches in this file. It
12652 doesn't seem to make much sense to use any of these relocs
12653 in data, so testing the insn should be safe. */
12654 if ((insn
& (0x3f << 26)) == (56u << 26))
12656 if (((relocation
+ addend
) & mask
) != 0)
12658 (*_bfd_error_handler
)
12659 (_("%B: error: relocation %s not a multiple of %d"),
12661 ppc64_elf_howto_table
[r_type
]->name
,
12663 bfd_set_error (bfd_error_bad_value
);
12670 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12671 because such sections are not SEC_ALLOC and thus ld.so will
12672 not process them. */
12673 if (unresolved_reloc
12674 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
12675 && h
->elf
.def_dynamic
))
12677 (*_bfd_error_handler
)
12678 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12681 (long) rel
->r_offset
,
12682 ppc64_elf_howto_table
[(int) r_type
]->name
,
12683 h
->elf
.root
.root
.string
);
12687 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
12695 if (r
!= bfd_reloc_ok
)
12697 if (sym_name
== NULL
)
12698 sym_name
= "(null)";
12699 if (r
== bfd_reloc_overflow
)
12704 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12705 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
12707 /* Assume this is a call protected by other code that
12708 detects the symbol is undefined. If this is the case,
12709 we can safely ignore the overflow. If not, the
12710 program is hosed anyway, and a little warning isn't
12716 if (!((*info
->callbacks
->reloc_overflow
)
12717 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
12718 ppc64_elf_howto_table
[r_type
]->name
,
12719 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
12724 (*_bfd_error_handler
)
12725 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12728 (long) rel
->r_offset
,
12729 ppc64_elf_howto_table
[r_type
]->name
,
12737 /* If we're emitting relocations, then shortly after this function
12738 returns, reloc offsets and addends for this section will be
12739 adjusted. Worse, reloc symbol indices will be for the output
12740 file rather than the input. Save a copy of the relocs for
12741 opd_entry_value. */
12742 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
12745 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
12746 rel
= bfd_alloc (input_bfd
, amt
);
12747 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
12748 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
12751 memcpy (rel
, relocs
, amt
);
12756 /* Adjust the value of any local symbols in opd sections. */
12759 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
12760 const char *name ATTRIBUTE_UNUSED
,
12761 Elf_Internal_Sym
*elfsym
,
12762 asection
*input_sec
,
12763 struct elf_link_hash_entry
*h
)
12765 struct _opd_sec_data
*opd
;
12772 opd
= get_opd_info (input_sec
);
12773 if (opd
== NULL
|| opd
->adjust
== NULL
)
12776 value
= elfsym
->st_value
- input_sec
->output_offset
;
12777 if (!info
->relocatable
)
12778 value
-= input_sec
->output_section
->vma
;
12780 adjust
= opd
->adjust
[value
/ 8];
12784 elfsym
->st_value
+= adjust
;
12788 /* Finish up dynamic symbol handling. We set the contents of various
12789 dynamic sections here. */
12792 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
12793 struct bfd_link_info
*info
,
12794 struct elf_link_hash_entry
*h
,
12795 Elf_Internal_Sym
*sym
)
12797 struct ppc_link_hash_table
*htab
;
12798 struct plt_entry
*ent
;
12799 Elf_Internal_Rela rela
;
12802 htab
= ppc_hash_table (info
);
12806 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12807 if (ent
->plt
.offset
!= (bfd_vma
) -1)
12809 /* This symbol has an entry in the procedure linkage
12810 table. Set it up. */
12811 if (!htab
->elf
.dynamic_sections_created
12812 || h
->dynindx
== -1)
12814 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
12816 && (h
->root
.type
== bfd_link_hash_defined
12817 || h
->root
.type
== bfd_link_hash_defweak
));
12818 rela
.r_offset
= (htab
->iplt
->output_section
->vma
12819 + htab
->iplt
->output_offset
12820 + ent
->plt
.offset
);
12821 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
12822 rela
.r_addend
= (h
->root
.u
.def
.value
12823 + h
->root
.u
.def
.section
->output_offset
12824 + h
->root
.u
.def
.section
->output_section
->vma
12826 loc
= (htab
->reliplt
->contents
12827 + (htab
->reliplt
->reloc_count
++
12828 * sizeof (Elf64_External_Rela
)));
12832 rela
.r_offset
= (htab
->plt
->output_section
->vma
12833 + htab
->plt
->output_offset
12834 + ent
->plt
.offset
);
12835 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
12836 rela
.r_addend
= ent
->addend
;
12837 loc
= (htab
->relplt
->contents
12838 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
12839 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
12841 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
12846 /* This symbol needs a copy reloc. Set it up. */
12848 if (h
->dynindx
== -1
12849 || (h
->root
.type
!= bfd_link_hash_defined
12850 && h
->root
.type
!= bfd_link_hash_defweak
)
12851 || htab
->relbss
== NULL
)
12854 rela
.r_offset
= (h
->root
.u
.def
.value
12855 + h
->root
.u
.def
.section
->output_section
->vma
12856 + h
->root
.u
.def
.section
->output_offset
);
12857 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
12859 loc
= htab
->relbss
->contents
;
12860 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12861 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
12864 /* Mark some specially defined symbols as absolute. */
12865 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
12866 sym
->st_shndx
= SHN_ABS
;
12871 /* Used to decide how to sort relocs in an optimal manner for the
12872 dynamic linker, before writing them out. */
12874 static enum elf_reloc_type_class
12875 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
12877 enum elf_ppc64_reloc_type r_type
;
12879 r_type
= ELF64_R_TYPE (rela
->r_info
);
12882 case R_PPC64_RELATIVE
:
12883 return reloc_class_relative
;
12884 case R_PPC64_JMP_SLOT
:
12885 return reloc_class_plt
;
12887 return reloc_class_copy
;
12889 return reloc_class_normal
;
12893 /* Finish up the dynamic sections. */
12896 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
12897 struct bfd_link_info
*info
)
12899 struct ppc_link_hash_table
*htab
;
12903 htab
= ppc_hash_table (info
);
12907 dynobj
= htab
->elf
.dynobj
;
12908 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
12910 if (htab
->elf
.dynamic_sections_created
)
12912 Elf64_External_Dyn
*dyncon
, *dynconend
;
12914 if (sdyn
== NULL
|| htab
->got
== NULL
)
12917 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
12918 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
12919 for (; dyncon
< dynconend
; dyncon
++)
12921 Elf_Internal_Dyn dyn
;
12924 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
12931 case DT_PPC64_GLINK
:
12933 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
12934 /* We stupidly defined DT_PPC64_GLINK to be the start
12935 of glink rather than the first entry point, which is
12936 what ld.so needs, and now have a bigger stub to
12937 support automatic multiple TOCs. */
12938 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
12942 s
= bfd_get_section_by_name (output_bfd
, ".opd");
12945 dyn
.d_un
.d_ptr
= s
->vma
;
12948 case DT_PPC64_OPDSZ
:
12949 s
= bfd_get_section_by_name (output_bfd
, ".opd");
12952 dyn
.d_un
.d_val
= s
->size
;
12957 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
12962 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
12966 dyn
.d_un
.d_val
= htab
->relplt
->size
;
12970 /* Don't count procedure linkage table relocs in the
12971 overall reloc count. */
12975 dyn
.d_un
.d_val
-= s
->size
;
12979 /* We may not be using the standard ELF linker script.
12980 If .rela.plt is the first .rela section, we adjust
12981 DT_RELA to not include it. */
12985 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
12987 dyn
.d_un
.d_ptr
+= s
->size
;
12991 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
12995 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
12997 /* Fill in the first entry in the global offset table.
12998 We use it to hold the link-time TOCbase. */
12999 bfd_put_64 (output_bfd
,
13000 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13001 htab
->got
->contents
);
13003 /* Set .got entry size. */
13004 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13007 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13009 /* Set .plt entry size. */
13010 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13014 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13015 brlt ourselves if emitrelocations. */
13016 if (htab
->brlt
!= NULL
13017 && htab
->brlt
->reloc_count
!= 0
13018 && !_bfd_elf_link_output_relocs (output_bfd
,
13020 &elf_section_data (htab
->brlt
)->rel_hdr
,
13021 elf_section_data (htab
->brlt
)->relocs
,
13025 if (htab
->glink
!= NULL
13026 && htab
->glink
->reloc_count
!= 0
13027 && !_bfd_elf_link_output_relocs (output_bfd
,
13029 &elf_section_data (htab
->glink
)->rel_hdr
,
13030 elf_section_data (htab
->glink
)->relocs
,
13034 /* We need to handle writing out multiple GOT sections ourselves,
13035 since we didn't add them to DYNOBJ. We know dynobj is the first
13037 while ((dynobj
= dynobj
->link_next
) != NULL
)
13041 if (!is_ppc64_elf (dynobj
))
13044 s
= ppc64_elf_tdata (dynobj
)->got
;
13047 && s
->output_section
!= bfd_abs_section_ptr
13048 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13049 s
->contents
, s
->output_offset
,
13052 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13055 && s
->output_section
!= bfd_abs_section_ptr
13056 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13057 s
->contents
, s
->output_offset
,
13065 #include "elf64-target.h"