1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 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 struct ppc64_elf_obj_tdata
2531 struct elf_obj_tdata elf
;
2533 /* Shortcuts to dynamic linker sections. */
2537 /* Used during garbage collection. We attach global symbols defined
2538 on removed .opd entries to this section so that the sym is removed. */
2539 asection
*deleted_section
;
2541 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2542 sections means we potentially need one of these for each input bfd. */
2544 bfd_signed_vma refcount
;
2548 /* A copy of relocs before they are modified for --emit-relocs. */
2549 Elf_Internal_Rela
*opd_relocs
;
2552 #define ppc64_elf_tdata(bfd) \
2553 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2555 #define ppc64_tlsld_got(bfd) \
2556 (&ppc64_elf_tdata (bfd)->tlsld_got)
2558 #define is_ppc64_elf(bfd) \
2559 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2560 && elf_object_id (bfd) == PPC64_ELF_TDATA)
2562 /* Override the generic function because we store some extras. */
2565 ppc64_elf_mkobject (bfd
*abfd
)
2567 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2571 /* Fix bad default arch selected for a 64 bit input bfd when the
2572 default is 32 bit. */
2575 ppc64_elf_object_p (bfd
*abfd
)
2577 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2579 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2581 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2583 /* Relies on arch after 32 bit default being 64 bit default. */
2584 abfd
->arch_info
= abfd
->arch_info
->next
;
2585 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2591 /* Support for core dump NOTE sections. */
2594 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2596 size_t offset
, size
;
2598 if (note
->descsz
!= 504)
2602 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2605 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2611 /* Make a ".reg/999" section. */
2612 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2613 size
, note
->descpos
+ offset
);
2617 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2619 if (note
->descsz
!= 136)
2622 elf_tdata (abfd
)->core_program
2623 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2624 elf_tdata (abfd
)->core_command
2625 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2631 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2644 va_start (ap
, note_type
);
2645 memset (data
, 0, 40);
2646 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2647 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2649 return elfcore_write_note (abfd
, buf
, bufsiz
,
2650 "CORE", note_type
, data
, sizeof (data
));
2661 va_start (ap
, note_type
);
2662 memset (data
, 0, 112);
2663 pid
= va_arg (ap
, long);
2664 bfd_put_32 (abfd
, pid
, data
+ 32);
2665 cursig
= va_arg (ap
, int);
2666 bfd_put_16 (abfd
, cursig
, data
+ 12);
2667 greg
= va_arg (ap
, const void *);
2668 memcpy (data
+ 112, greg
, 384);
2669 memset (data
+ 496, 0, 8);
2671 return elfcore_write_note (abfd
, buf
, bufsiz
,
2672 "CORE", note_type
, data
, sizeof (data
));
2677 /* Merge backend specific data from an object file to the output
2678 object file when linking. */
2681 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2683 /* Check if we have the same endianess. */
2684 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2685 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2686 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2690 if (bfd_big_endian (ibfd
))
2691 msg
= _("%B: compiled for a big endian system "
2692 "and target is little endian");
2694 msg
= _("%B: compiled for a little endian system "
2695 "and target is big endian");
2697 (*_bfd_error_handler
) (msg
, ibfd
);
2699 bfd_set_error (bfd_error_wrong_format
);
2706 /* Add extra PPC sections. */
2708 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2710 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2711 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2712 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2713 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2714 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2715 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2716 { NULL
, 0, 0, 0, 0 }
2719 enum _ppc64_sec_type
{
2725 struct _ppc64_elf_section_data
2727 struct bfd_elf_section_data elf
;
2731 /* An array with one entry for each opd function descriptor. */
2732 struct _opd_sec_data
2734 /* Points to the function code section for local opd entries. */
2735 asection
**func_sec
;
2737 /* After editing .opd, adjust references to opd local syms. */
2741 /* An array for toc sections, indexed by offset/8. */
2742 struct _toc_sec_data
2744 /* Specifies the relocation symbol index used at a given toc offset. */
2747 /* And the relocation addend. */
2752 enum _ppc64_sec_type sec_type
:2;
2754 /* Flag set when small branches are detected. Used to
2755 select suitable defaults for the stub group size. */
2756 unsigned int has_14bit_branch
:1;
2759 #define ppc64_elf_section_data(sec) \
2760 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2763 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2765 if (!sec
->used_by_bfd
)
2767 struct _ppc64_elf_section_data
*sdata
;
2768 bfd_size_type amt
= sizeof (*sdata
);
2770 sdata
= bfd_zalloc (abfd
, amt
);
2773 sec
->used_by_bfd
= sdata
;
2776 return _bfd_elf_new_section_hook (abfd
, sec
);
2779 static struct _opd_sec_data
*
2780 get_opd_info (asection
* sec
)
2783 && ppc64_elf_section_data (sec
) != NULL
2784 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2785 return &ppc64_elf_section_data (sec
)->u
.opd
;
2789 /* Parameters for the qsort hook. */
2790 static bfd_boolean synthetic_relocatable
;
2792 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2795 compare_symbols (const void *ap
, const void *bp
)
2797 const asymbol
*a
= * (const asymbol
**) ap
;
2798 const asymbol
*b
= * (const asymbol
**) bp
;
2800 /* Section symbols first. */
2801 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2803 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2806 /* then .opd symbols. */
2807 if (strcmp (a
->section
->name
, ".opd") == 0
2808 && strcmp (b
->section
->name
, ".opd") != 0)
2810 if (strcmp (a
->section
->name
, ".opd") != 0
2811 && strcmp (b
->section
->name
, ".opd") == 0)
2814 /* then other code symbols. */
2815 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2816 == (SEC_CODE
| SEC_ALLOC
)
2817 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2818 != (SEC_CODE
| SEC_ALLOC
))
2821 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2822 != (SEC_CODE
| SEC_ALLOC
)
2823 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2824 == (SEC_CODE
| SEC_ALLOC
))
2827 if (synthetic_relocatable
)
2829 if (a
->section
->id
< b
->section
->id
)
2832 if (a
->section
->id
> b
->section
->id
)
2836 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2839 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2842 /* For syms with the same value, prefer strong dynamic global function
2843 syms over other syms. */
2844 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2847 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2850 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2853 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2856 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2859 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2862 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2865 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2871 /* Search SYMS for a symbol of the given VALUE. */
2874 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2882 mid
= (lo
+ hi
) >> 1;
2883 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2885 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2895 mid
= (lo
+ hi
) >> 1;
2896 if (syms
[mid
]->section
->id
< id
)
2898 else if (syms
[mid
]->section
->id
> id
)
2900 else if (syms
[mid
]->value
< value
)
2902 else if (syms
[mid
]->value
> value
)
2912 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2914 bfd_vma vma
= *(bfd_vma
*) ptr
;
2915 return ((section
->flags
& SEC_ALLOC
) != 0
2916 && section
->vma
<= vma
2917 && vma
< section
->vma
+ section
->size
);
2920 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2921 entry syms. Also generate @plt symbols for the glink branch table. */
2924 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2925 long static_count
, asymbol
**static_syms
,
2926 long dyn_count
, asymbol
**dyn_syms
,
2933 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2935 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2940 opd
= bfd_get_section_by_name (abfd
, ".opd");
2944 symcount
= static_count
;
2946 symcount
+= dyn_count
;
2950 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2954 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2956 /* Use both symbol tables. */
2957 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2958 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2960 else if (!relocatable
&& static_count
== 0)
2961 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2963 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2965 synthetic_relocatable
= relocatable
;
2966 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2968 if (!relocatable
&& symcount
> 1)
2971 /* Trim duplicate syms, since we may have merged the normal and
2972 dynamic symbols. Actually, we only care about syms that have
2973 different values, so trim any with the same value. */
2974 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2975 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2976 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2977 syms
[j
++] = syms
[i
];
2982 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
2986 for (; i
< symcount
; ++i
)
2987 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2988 != (SEC_CODE
| SEC_ALLOC
))
2989 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2993 for (; i
< symcount
; ++i
)
2994 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2998 for (; i
< symcount
; ++i
)
2999 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3003 for (; i
< symcount
; ++i
)
3004 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3005 != (SEC_CODE
| SEC_ALLOC
))
3013 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3018 if (opdsymend
== secsymend
)
3021 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3022 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3026 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3033 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3037 while (r
< opd
->relocation
+ relcount
3038 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3041 if (r
== opd
->relocation
+ relcount
)
3044 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3047 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3050 sym
= *r
->sym_ptr_ptr
;
3051 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3052 sym
->section
->id
, sym
->value
+ r
->addend
))
3055 size
+= sizeof (asymbol
);
3056 size
+= strlen (syms
[i
]->name
) + 2;
3060 s
= *ret
= bfd_malloc (size
);
3067 names
= (char *) (s
+ count
);
3069 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3073 while (r
< opd
->relocation
+ relcount
3074 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3077 if (r
== opd
->relocation
+ relcount
)
3080 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3083 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3086 sym
= *r
->sym_ptr_ptr
;
3087 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3088 sym
->section
->id
, sym
->value
+ r
->addend
))
3093 s
->flags
|= BSF_SYNTHETIC
;
3094 s
->section
= sym
->section
;
3095 s
->value
= sym
->value
+ r
->addend
;
3098 len
= strlen (syms
[i
]->name
);
3099 memcpy (names
, syms
[i
]->name
, len
+ 1);
3101 /* Have udata.p point back to the original symbol this
3102 synthetic symbol was derived from. */
3103 s
->udata
.p
= syms
[i
];
3110 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3114 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3115 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3118 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3122 free_contents_and_exit
:
3130 for (i
= secsymend
; i
< opdsymend
; ++i
)
3134 /* Ignore bogus symbols. */
3135 if (syms
[i
]->value
> opd
->size
- 8)
3138 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3139 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3142 size
+= sizeof (asymbol
);
3143 size
+= strlen (syms
[i
]->name
) + 2;
3147 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3149 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3151 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3153 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3155 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3156 goto free_contents_and_exit
;
3158 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3159 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3162 extdynend
= extdyn
+ dynamic
->size
;
3163 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3165 Elf_Internal_Dyn dyn
;
3166 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3168 if (dyn
.d_tag
== DT_NULL
)
3171 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3173 /* The first glink stub starts at offset 32; see comment in
3174 ppc64_elf_finish_dynamic_sections. */
3175 glink_vma
= dyn
.d_un
.d_val
+ 32;
3176 /* The .glink section usually does not survive the final
3177 link; search for the section (usually .text) where the
3178 glink stubs now reside. */
3179 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3190 /* Determine __glink trampoline by reading the relative branch
3191 from the first glink stub. */
3193 if (bfd_get_section_contents (abfd
, glink
, buf
,
3194 glink_vma
+ 4 - glink
->vma
, 4))
3196 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3198 if ((insn
& ~0x3fffffc) == 0)
3199 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3203 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3205 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3208 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3209 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3210 goto free_contents_and_exit
;
3212 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3213 size
+= plt_count
* sizeof (asymbol
);
3215 p
= relplt
->relocation
;
3216 for (i
= 0; i
< plt_count
; i
++, p
++)
3218 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3220 size
+= sizeof ("+0x") - 1 + 16;
3225 s
= *ret
= bfd_malloc (size
);
3227 goto free_contents_and_exit
;
3229 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3231 for (i
= secsymend
; i
< opdsymend
; ++i
)
3235 if (syms
[i
]->value
> opd
->size
- 8)
3238 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3239 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3243 asection
*sec
= abfd
->sections
;
3250 long mid
= (lo
+ hi
) >> 1;
3251 if (syms
[mid
]->section
->vma
< ent
)
3253 else if (syms
[mid
]->section
->vma
> ent
)
3257 sec
= syms
[mid
]->section
;
3262 if (lo
>= hi
&& lo
> codesecsym
)
3263 sec
= syms
[lo
- 1]->section
;
3265 for (; sec
!= NULL
; sec
= sec
->next
)
3269 if ((sec
->flags
& SEC_ALLOC
) == 0
3270 || (sec
->flags
& SEC_LOAD
) == 0)
3272 if ((sec
->flags
& SEC_CODE
) != 0)
3275 s
->flags
|= BSF_SYNTHETIC
;
3276 s
->value
= ent
- s
->section
->vma
;
3279 len
= strlen (syms
[i
]->name
);
3280 memcpy (names
, syms
[i
]->name
, len
+ 1);
3282 /* Have udata.p point back to the original symbol this
3283 synthetic symbol was derived from. */
3284 s
->udata
.p
= syms
[i
];
3290 if (glink
!= NULL
&& relplt
!= NULL
)
3294 /* Add a symbol for the main glink trampoline. */
3295 memset (s
, 0, sizeof *s
);
3297 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3299 s
->value
= resolv_vma
- glink
->vma
;
3301 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3302 names
+= sizeof ("__glink_PLTresolve");
3307 /* FIXME: It would be very much nicer to put sym@plt on the
3308 stub rather than on the glink branch table entry. The
3309 objdump disassembler would then use a sensible symbol
3310 name on plt calls. The difficulty in doing so is
3311 a) finding the stubs, and,
3312 b) matching stubs against plt entries, and,
3313 c) there can be multiple stubs for a given plt entry.
3315 Solving (a) could be done by code scanning, but older
3316 ppc64 binaries used different stubs to current code.
3317 (b) is the tricky one since you need to known the toc
3318 pointer for at least one function that uses a pic stub to
3319 be able to calculate the plt address referenced.
3320 (c) means gdb would need to set multiple breakpoints (or
3321 find the glink branch itself) when setting breakpoints
3322 for pending shared library loads. */
3323 p
= relplt
->relocation
;
3324 for (i
= 0; i
< plt_count
; i
++, p
++)
3328 *s
= **p
->sym_ptr_ptr
;
3329 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3330 we are defining a symbol, ensure one of them is set. */
3331 if ((s
->flags
& BSF_LOCAL
) == 0)
3332 s
->flags
|= BSF_GLOBAL
;
3333 s
->flags
|= BSF_SYNTHETIC
;
3335 s
->value
= glink_vma
- glink
->vma
;
3338 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3339 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3343 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3344 names
+= sizeof ("+0x") - 1;
3345 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3346 names
+= strlen (names
);
3348 memcpy (names
, "@plt", sizeof ("@plt"));
3349 names
+= sizeof ("@plt");
3364 /* The following functions are specific to the ELF linker, while
3365 functions above are used generally. Those named ppc64_elf_* are
3366 called by the main ELF linker code. They appear in this file more
3367 or less in the order in which they are called. eg.
3368 ppc64_elf_check_relocs is called early in the link process,
3369 ppc64_elf_finish_dynamic_sections is one of the last functions
3372 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3373 functions have both a function code symbol and a function descriptor
3374 symbol. A call to foo in a relocatable object file looks like:
3381 The function definition in another object file might be:
3385 . .quad .TOC.@tocbase
3391 When the linker resolves the call during a static link, the branch
3392 unsurprisingly just goes to .foo and the .opd information is unused.
3393 If the function definition is in a shared library, things are a little
3394 different: The call goes via a plt call stub, the opd information gets
3395 copied to the plt, and the linker patches the nop.
3403 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3404 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3405 . std 2,40(1) # this is the general idea
3413 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3415 The "reloc ()" notation is supposed to indicate that the linker emits
3416 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3419 What are the difficulties here? Well, firstly, the relocations
3420 examined by the linker in check_relocs are against the function code
3421 sym .foo, while the dynamic relocation in the plt is emitted against
3422 the function descriptor symbol, foo. Somewhere along the line, we need
3423 to carefully copy dynamic link information from one symbol to the other.
3424 Secondly, the generic part of the elf linker will make .foo a dynamic
3425 symbol as is normal for most other backends. We need foo dynamic
3426 instead, at least for an application final link. However, when
3427 creating a shared library containing foo, we need to have both symbols
3428 dynamic so that references to .foo are satisfied during the early
3429 stages of linking. Otherwise the linker might decide to pull in a
3430 definition from some other object, eg. a static library.
3432 Update: As of August 2004, we support a new convention. Function
3433 calls may use the function descriptor symbol, ie. "bl foo". This
3434 behaves exactly as "bl .foo". */
3436 /* The linker needs to keep track of the number of relocs that it
3437 decides to copy as dynamic relocs in check_relocs for each symbol.
3438 This is so that it can later discard them if they are found to be
3439 unnecessary. We store the information in a field extending the
3440 regular ELF linker hash table. */
3442 struct ppc_dyn_relocs
3444 struct ppc_dyn_relocs
*next
;
3446 /* The input section of the reloc. */
3449 /* Total number of relocs copied for the input section. */
3450 bfd_size_type count
;
3452 /* Number of pc-relative relocs copied for the input section. */
3453 bfd_size_type pc_count
;
3456 /* Track GOT entries needed for a given symbol. We might need more
3457 than one got entry per symbol. */
3460 struct got_entry
*next
;
3462 /* The symbol addend that we'll be placing in the GOT. */
3465 /* Unlike other ELF targets, we use separate GOT entries for the same
3466 symbol referenced from different input files. This is to support
3467 automatic multiple TOC/GOT sections, where the TOC base can vary
3468 from one input file to another. FIXME: After group_sections we
3469 ought to merge entries within the group.
3471 Point to the BFD owning this GOT entry. */
3474 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3475 TLS_TPREL or TLS_DTPREL for tls entries. */
3478 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3481 bfd_signed_vma refcount
;
3486 /* The same for PLT. */
3489 struct plt_entry
*next
;
3495 bfd_signed_vma refcount
;
3500 /* Of those relocs that might be copied as dynamic relocs, this function
3501 selects those that must be copied when linking a shared library,
3502 even when the symbol is local. */
3505 must_be_dyn_reloc (struct bfd_link_info
*info
,
3506 enum elf_ppc64_reloc_type r_type
)
3518 case R_PPC64_TPREL16
:
3519 case R_PPC64_TPREL16_LO
:
3520 case R_PPC64_TPREL16_HI
:
3521 case R_PPC64_TPREL16_HA
:
3522 case R_PPC64_TPREL16_DS
:
3523 case R_PPC64_TPREL16_LO_DS
:
3524 case R_PPC64_TPREL16_HIGHER
:
3525 case R_PPC64_TPREL16_HIGHERA
:
3526 case R_PPC64_TPREL16_HIGHEST
:
3527 case R_PPC64_TPREL16_HIGHESTA
:
3528 case R_PPC64_TPREL64
:
3529 return !info
->executable
;
3533 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3534 copying dynamic variables from a shared lib into an app's dynbss
3535 section, and instead use a dynamic relocation to point into the
3536 shared lib. With code that gcc generates, it's vital that this be
3537 enabled; In the PowerPC64 ABI, the address of a function is actually
3538 the address of a function descriptor, which resides in the .opd
3539 section. gcc uses the descriptor directly rather than going via the
3540 GOT as some other ABI's do, which means that initialized function
3541 pointers must reference the descriptor. Thus, a function pointer
3542 initialized to the address of a function in a shared library will
3543 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3544 redefines the function descriptor symbol to point to the copy. This
3545 presents a problem as a plt entry for that function is also
3546 initialized from the function descriptor symbol and the copy reloc
3547 may not be initialized first. */
3548 #define ELIMINATE_COPY_RELOCS 1
3550 /* Section name for stubs is the associated section name plus this
3552 #define STUB_SUFFIX ".stub"
3555 ppc_stub_long_branch:
3556 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3557 destination, but a 24 bit branch in a stub section will reach.
3560 ppc_stub_plt_branch:
3561 Similar to the above, but a 24 bit branch in the stub section won't
3562 reach its destination.
3563 . addis %r12,%r2,xxx@toc@ha
3564 . ld %r11,xxx@toc@l(%r12)
3569 Used to call a function in a shared library. If it so happens that
3570 the plt entry referenced crosses a 64k boundary, then an extra
3571 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3572 . addis %r12,%r2,xxx@toc@ha
3574 . ld %r11,xxx+0@toc@l(%r12)
3576 . ld %r2,xxx+8@toc@l(%r12)
3577 . ld %r11,xxx+16@toc@l(%r12)
3580 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3581 code to adjust the value and save r2 to support multiple toc sections.
3582 A ppc_stub_long_branch with an r2 offset looks like:
3584 . addis %r2,%r2,off@ha
3585 . addi %r2,%r2,off@l
3588 A ppc_stub_plt_branch with an r2 offset looks like:
3590 . addis %r12,%r2,xxx@toc@ha
3591 . ld %r11,xxx@toc@l(%r12)
3592 . addis %r2,%r2,off@ha
3593 . addi %r2,%r2,off@l
3597 In cases where the "addis" instruction would add zero, the "addis" is
3598 omitted and following instructions modified slightly in some cases.
3601 enum ppc_stub_type
{
3603 ppc_stub_long_branch
,
3604 ppc_stub_long_branch_r2off
,
3605 ppc_stub_plt_branch
,
3606 ppc_stub_plt_branch_r2off
,
3610 struct ppc_stub_hash_entry
{
3612 /* Base hash table entry structure. */
3613 struct bfd_hash_entry root
;
3615 enum ppc_stub_type stub_type
;
3617 /* The stub section. */
3620 /* Offset within stub_sec of the beginning of this stub. */
3621 bfd_vma stub_offset
;
3623 /* Given the symbol's value and its section we can determine its final
3624 value when building the stubs (so the stub knows where to jump. */
3625 bfd_vma target_value
;
3626 asection
*target_section
;
3628 /* The symbol table entry, if any, that this was derived from. */
3629 struct ppc_link_hash_entry
*h
;
3630 struct plt_entry
*plt_ent
;
3632 /* And the reloc addend that this was derived from. */
3635 /* Where this stub is being called from, or, in the case of combined
3636 stub sections, the first input section in the group. */
3640 struct ppc_branch_hash_entry
{
3642 /* Base hash table entry structure. */
3643 struct bfd_hash_entry root
;
3645 /* Offset within branch lookup table. */
3646 unsigned int offset
;
3648 /* Generation marker. */
3652 struct ppc_link_hash_entry
3654 struct elf_link_hash_entry elf
;
3657 /* A pointer to the most recently used stub hash entry against this
3659 struct ppc_stub_hash_entry
*stub_cache
;
3661 /* A pointer to the next symbol starting with a '.' */
3662 struct ppc_link_hash_entry
*next_dot_sym
;
3665 /* Track dynamic relocs copied for this symbol. */
3666 struct ppc_dyn_relocs
*dyn_relocs
;
3668 /* Link between function code and descriptor symbols. */
3669 struct ppc_link_hash_entry
*oh
;
3671 /* Flag function code and descriptor symbols. */
3672 unsigned int is_func
:1;
3673 unsigned int is_func_descriptor
:1;
3674 unsigned int fake
:1;
3676 /* Whether global opd/toc sym has been adjusted or not.
3677 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3678 should be set for all globals defined in any opd/toc section. */
3679 unsigned int adjust_done
:1;
3681 /* Set if we twiddled this symbol to weak at some stage. */
3682 unsigned int was_undefined
:1;
3684 /* Contexts in which symbol is used in the GOT (or TOC).
3685 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3686 corresponding relocs are encountered during check_relocs.
3687 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3688 indicate the corresponding GOT entry type is not needed.
3689 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3690 a TPREL one. We use a separate flag rather than setting TPREL
3691 just for convenience in distinguishing the two cases. */
3692 #define TLS_GD 1 /* GD reloc. */
3693 #define TLS_LD 2 /* LD reloc. */
3694 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3695 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3696 #define TLS_TLS 16 /* Any TLS reloc. */
3697 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3698 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3699 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3703 /* ppc64 ELF linker hash table. */
3705 struct ppc_link_hash_table
3707 struct elf_link_hash_table elf
;
3709 /* The stub hash table. */
3710 struct bfd_hash_table stub_hash_table
;
3712 /* Another hash table for plt_branch stubs. */
3713 struct bfd_hash_table branch_hash_table
;
3715 /* Linker stub bfd. */
3718 /* Linker call-backs. */
3719 asection
* (*add_stub_section
) (const char *, asection
*);
3720 void (*layout_sections_again
) (void);
3722 /* Array to keep track of which stub sections have been created, and
3723 information on stub grouping. */
3725 /* This is the section to which stubs in the group will be attached. */
3727 /* The stub section. */
3729 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3733 /* Temp used when calculating TOC pointers. */
3736 /* Highest input section id. */
3739 /* Highest output section index. */
3742 /* Used when adding symbols. */
3743 struct ppc_link_hash_entry
*dot_syms
;
3745 /* List of input sections for each output section. */
3746 asection
**input_list
;
3748 /* Short-cuts to get to dynamic linker sections. */
3761 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3762 struct ppc_link_hash_entry
*tls_get_addr
;
3763 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3766 unsigned long stub_count
[ppc_stub_plt_call
];
3768 /* Number of stubs against global syms. */
3769 unsigned long stub_globals
;
3771 /* Set if we should emit symbols for stubs. */
3772 unsigned int emit_stub_syms
:1;
3774 /* Support for multiple toc sections. */
3775 unsigned int no_multi_toc
:1;
3776 unsigned int multi_toc_needed
:1;
3779 unsigned int stub_error
:1;
3781 /* Temp used by ppc64_elf_process_dot_syms. */
3782 unsigned int twiddled_syms
:1;
3784 /* Incremented every time we size stubs. */
3785 unsigned int stub_iteration
;
3787 /* Small local sym cache. */
3788 struct sym_cache sym_cache
;
3791 /* Rename some of the generic section flags to better document how they
3793 #define has_toc_reloc has_gp_reloc
3794 #define makes_toc_func_call need_finalize_relax
3795 #define call_check_in_progress reloc_done
3797 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3799 #define ppc_hash_table(p) \
3800 ((struct ppc_link_hash_table *) ((p)->hash))
3802 #define ppc_stub_hash_lookup(table, string, create, copy) \
3803 ((struct ppc_stub_hash_entry *) \
3804 bfd_hash_lookup ((table), (string), (create), (copy)))
3806 #define ppc_branch_hash_lookup(table, string, create, copy) \
3807 ((struct ppc_branch_hash_entry *) \
3808 bfd_hash_lookup ((table), (string), (create), (copy)))
3810 /* Create an entry in the stub hash table. */
3812 static struct bfd_hash_entry
*
3813 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3814 struct bfd_hash_table
*table
,
3817 /* Allocate the structure if it has not already been allocated by a
3821 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3826 /* Call the allocation method of the superclass. */
3827 entry
= bfd_hash_newfunc (entry
, table
, string
);
3830 struct ppc_stub_hash_entry
*eh
;
3832 /* Initialize the local fields. */
3833 eh
= (struct ppc_stub_hash_entry
*) entry
;
3834 eh
->stub_type
= ppc_stub_none
;
3835 eh
->stub_sec
= NULL
;
3836 eh
->stub_offset
= 0;
3837 eh
->target_value
= 0;
3838 eh
->target_section
= NULL
;
3846 /* Create an entry in the branch hash table. */
3848 static struct bfd_hash_entry
*
3849 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3850 struct bfd_hash_table
*table
,
3853 /* Allocate the structure if it has not already been allocated by a
3857 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3862 /* Call the allocation method of the superclass. */
3863 entry
= bfd_hash_newfunc (entry
, table
, string
);
3866 struct ppc_branch_hash_entry
*eh
;
3868 /* Initialize the local fields. */
3869 eh
= (struct ppc_branch_hash_entry
*) entry
;
3877 /* Create an entry in a ppc64 ELF linker hash table. */
3879 static struct bfd_hash_entry
*
3880 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3881 struct bfd_hash_table
*table
,
3884 /* Allocate the structure if it has not already been allocated by a
3888 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3893 /* Call the allocation method of the superclass. */
3894 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3897 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3899 memset (&eh
->u
.stub_cache
, 0,
3900 (sizeof (struct ppc_link_hash_entry
)
3901 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3903 /* When making function calls, old ABI code references function entry
3904 points (dot symbols), while new ABI code references the function
3905 descriptor symbol. We need to make any combination of reference and
3906 definition work together, without breaking archive linking.
3908 For a defined function "foo" and an undefined call to "bar":
3909 An old object defines "foo" and ".foo", references ".bar" (possibly
3911 A new object defines "foo" and references "bar".
3913 A new object thus has no problem with its undefined symbols being
3914 satisfied by definitions in an old object. On the other hand, the
3915 old object won't have ".bar" satisfied by a new object.
3917 Keep a list of newly added dot-symbols. */
3919 if (string
[0] == '.')
3921 struct ppc_link_hash_table
*htab
;
3923 htab
= (struct ppc_link_hash_table
*) table
;
3924 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3925 htab
->dot_syms
= eh
;
3932 /* Create a ppc64 ELF linker hash table. */
3934 static struct bfd_link_hash_table
*
3935 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3937 struct ppc_link_hash_table
*htab
;
3938 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3940 htab
= bfd_zmalloc (amt
);
3944 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3945 sizeof (struct ppc_link_hash_entry
)))
3951 /* Init the stub hash table too. */
3952 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3953 sizeof (struct ppc_stub_hash_entry
)))
3956 /* And the branch hash table. */
3957 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3958 sizeof (struct ppc_branch_hash_entry
)))
3961 /* Initializing two fields of the union is just cosmetic. We really
3962 only care about glist, but when compiled on a 32-bit host the
3963 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3964 debugger inspection of these fields look nicer. */
3965 htab
->elf
.init_got_refcount
.refcount
= 0;
3966 htab
->elf
.init_got_refcount
.glist
= NULL
;
3967 htab
->elf
.init_plt_refcount
.refcount
= 0;
3968 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3969 htab
->elf
.init_got_offset
.offset
= 0;
3970 htab
->elf
.init_got_offset
.glist
= NULL
;
3971 htab
->elf
.init_plt_offset
.offset
= 0;
3972 htab
->elf
.init_plt_offset
.glist
= NULL
;
3974 return &htab
->elf
.root
;
3977 /* Free the derived linker hash table. */
3980 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3982 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3984 bfd_hash_table_free (&ret
->stub_hash_table
);
3985 bfd_hash_table_free (&ret
->branch_hash_table
);
3986 _bfd_generic_link_hash_table_free (hash
);
3989 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3992 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3994 struct ppc_link_hash_table
*htab
;
3996 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3998 /* Always hook our dynamic sections into the first bfd, which is the
3999 linker created stub bfd. This ensures that the GOT header is at
4000 the start of the output TOC section. */
4001 htab
= ppc_hash_table (info
);
4002 htab
->stub_bfd
= abfd
;
4003 htab
->elf
.dynobj
= abfd
;
4006 /* Build a name for an entry in the stub hash table. */
4009 ppc_stub_name (const asection
*input_section
,
4010 const asection
*sym_sec
,
4011 const struct ppc_link_hash_entry
*h
,
4012 const Elf_Internal_Rela
*rel
)
4017 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4018 offsets from a sym as a branch target? In fact, we could
4019 probably assume the addend is always zero. */
4020 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4024 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4025 stub_name
= bfd_malloc (len
);
4026 if (stub_name
== NULL
)
4029 sprintf (stub_name
, "%08x.%s+%x",
4030 input_section
->id
& 0xffffffff,
4031 h
->elf
.root
.root
.string
,
4032 (int) rel
->r_addend
& 0xffffffff);
4036 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4037 stub_name
= bfd_malloc (len
);
4038 if (stub_name
== NULL
)
4041 sprintf (stub_name
, "%08x.%x:%x+%x",
4042 input_section
->id
& 0xffffffff,
4043 sym_sec
->id
& 0xffffffff,
4044 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4045 (int) rel
->r_addend
& 0xffffffff);
4047 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4048 stub_name
[len
- 2] = 0;
4052 /* Look up an entry in the stub hash. Stub entries are cached because
4053 creating the stub name takes a bit of time. */
4055 static struct ppc_stub_hash_entry
*
4056 ppc_get_stub_entry (const asection
*input_section
,
4057 const asection
*sym_sec
,
4058 struct ppc_link_hash_entry
*h
,
4059 const Elf_Internal_Rela
*rel
,
4060 struct ppc_link_hash_table
*htab
)
4062 struct ppc_stub_hash_entry
*stub_entry
;
4063 const asection
*id_sec
;
4065 /* If this input section is part of a group of sections sharing one
4066 stub section, then use the id of the first section in the group.
4067 Stub names need to include a section id, as there may well be
4068 more than one stub used to reach say, printf, and we need to
4069 distinguish between them. */
4070 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4072 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4073 && h
->u
.stub_cache
->h
== h
4074 && h
->u
.stub_cache
->id_sec
== id_sec
)
4076 stub_entry
= h
->u
.stub_cache
;
4082 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4083 if (stub_name
== NULL
)
4086 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4087 stub_name
, FALSE
, FALSE
);
4089 h
->u
.stub_cache
= stub_entry
;
4097 /* Add a new stub entry to the stub hash. Not all fields of the new
4098 stub entry are initialised. */
4100 static struct ppc_stub_hash_entry
*
4101 ppc_add_stub (const char *stub_name
,
4103 struct ppc_link_hash_table
*htab
)
4107 struct ppc_stub_hash_entry
*stub_entry
;
4109 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4110 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4111 if (stub_sec
== NULL
)
4113 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4114 if (stub_sec
== NULL
)
4120 namelen
= strlen (link_sec
->name
);
4121 len
= namelen
+ sizeof (STUB_SUFFIX
);
4122 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4126 memcpy (s_name
, link_sec
->name
, namelen
);
4127 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4128 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4129 if (stub_sec
== NULL
)
4131 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4133 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4136 /* Enter this entry into the linker stub hash table. */
4137 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4139 if (stub_entry
== NULL
)
4141 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4142 section
->owner
, stub_name
);
4146 stub_entry
->stub_sec
= stub_sec
;
4147 stub_entry
->stub_offset
= 0;
4148 stub_entry
->id_sec
= link_sec
;
4152 /* Create sections for linker generated code. */
4155 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4157 struct ppc_link_hash_table
*htab
;
4160 htab
= ppc_hash_table (info
);
4162 /* Create .sfpr for code to save and restore fp regs. */
4163 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4164 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4165 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4167 if (htab
->sfpr
== NULL
4168 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4171 /* Create .glink for lazy dynamic linking support. */
4172 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4174 if (htab
->glink
== NULL
4175 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4178 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4179 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4180 if (htab
->iplt
== NULL
4181 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4184 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4185 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4186 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4189 if (htab
->reliplt
== NULL
4190 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4193 /* Create branch lookup table for plt_branch stubs. */
4194 flags
= (SEC_ALLOC
| SEC_LOAD
4195 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4196 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4198 if (htab
->brlt
== NULL
4199 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4205 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4206 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4207 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4210 if (htab
->relbrlt
== NULL
4211 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4217 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4218 not already done. */
4221 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4223 asection
*got
, *relgot
;
4225 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4227 if (!is_ppc64_elf (abfd
))
4232 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4235 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4240 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4241 | SEC_LINKER_CREATED
);
4243 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4245 || !bfd_set_section_alignment (abfd
, got
, 3))
4248 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4249 flags
| SEC_READONLY
);
4251 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4254 ppc64_elf_tdata (abfd
)->got
= got
;
4255 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4259 /* Create the dynamic sections, and set up shortcuts. */
4262 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4264 struct ppc_link_hash_table
*htab
;
4266 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4269 htab
= ppc_hash_table (info
);
4271 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4272 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4273 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4274 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4276 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4278 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4279 || (!info
->shared
&& !htab
->relbss
))
4285 /* Follow indirect and warning symbol links. */
4287 static inline struct bfd_link_hash_entry
*
4288 follow_link (struct bfd_link_hash_entry
*h
)
4290 while (h
->type
== bfd_link_hash_indirect
4291 || h
->type
== bfd_link_hash_warning
)
4296 static inline struct elf_link_hash_entry
*
4297 elf_follow_link (struct elf_link_hash_entry
*h
)
4299 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4302 static inline struct ppc_link_hash_entry
*
4303 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4305 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4308 /* Merge PLT info on FROM with that on TO. */
4311 move_plt_plist (struct ppc_link_hash_entry
*from
,
4312 struct ppc_link_hash_entry
*to
)
4314 if (from
->elf
.plt
.plist
!= NULL
)
4316 if (to
->elf
.plt
.plist
!= NULL
)
4318 struct plt_entry
**entp
;
4319 struct plt_entry
*ent
;
4321 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4323 struct plt_entry
*dent
;
4325 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4326 if (dent
->addend
== ent
->addend
)
4328 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4335 *entp
= to
->elf
.plt
.plist
;
4338 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4339 from
->elf
.plt
.plist
= NULL
;
4343 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4346 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4347 struct elf_link_hash_entry
*dir
,
4348 struct elf_link_hash_entry
*ind
)
4350 struct ppc_link_hash_entry
*edir
, *eind
;
4352 edir
= (struct ppc_link_hash_entry
*) dir
;
4353 eind
= (struct ppc_link_hash_entry
*) ind
;
4355 /* Copy over any dynamic relocs we may have on the indirect sym. */
4356 if (eind
->dyn_relocs
!= NULL
)
4358 if (edir
->dyn_relocs
!= NULL
)
4360 struct ppc_dyn_relocs
**pp
;
4361 struct ppc_dyn_relocs
*p
;
4363 /* Add reloc counts against the indirect sym to the direct sym
4364 list. Merge any entries against the same section. */
4365 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4367 struct ppc_dyn_relocs
*q
;
4369 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4370 if (q
->sec
== p
->sec
)
4372 q
->pc_count
+= p
->pc_count
;
4373 q
->count
+= p
->count
;
4380 *pp
= edir
->dyn_relocs
;
4383 edir
->dyn_relocs
= eind
->dyn_relocs
;
4384 eind
->dyn_relocs
= NULL
;
4387 edir
->is_func
|= eind
->is_func
;
4388 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4389 edir
->tls_mask
|= eind
->tls_mask
;
4390 if (eind
->oh
!= NULL
)
4391 edir
->oh
= ppc_follow_link (eind
->oh
);
4393 /* If called to transfer flags for a weakdef during processing
4394 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4395 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4396 if (!(ELIMINATE_COPY_RELOCS
4397 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4398 && edir
->elf
.dynamic_adjusted
))
4399 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4401 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4402 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4403 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4404 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4406 /* If we were called to copy over info for a weak sym, that's all. */
4407 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4410 /* Copy over got entries that we may have already seen to the
4411 symbol which just became indirect. */
4412 if (eind
->elf
.got
.glist
!= NULL
)
4414 if (edir
->elf
.got
.glist
!= NULL
)
4416 struct got_entry
**entp
;
4417 struct got_entry
*ent
;
4419 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4421 struct got_entry
*dent
;
4423 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4424 if (dent
->addend
== ent
->addend
4425 && dent
->owner
== ent
->owner
4426 && dent
->tls_type
== ent
->tls_type
)
4428 dent
->got
.refcount
+= ent
->got
.refcount
;
4435 *entp
= edir
->elf
.got
.glist
;
4438 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4439 eind
->elf
.got
.glist
= NULL
;
4442 /* And plt entries. */
4443 move_plt_plist (eind
, edir
);
4445 if (eind
->elf
.dynindx
!= -1)
4447 if (edir
->elf
.dynindx
!= -1)
4448 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4449 edir
->elf
.dynstr_index
);
4450 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4451 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4452 eind
->elf
.dynindx
= -1;
4453 eind
->elf
.dynstr_index
= 0;
4457 /* Find the function descriptor hash entry from the given function code
4458 hash entry FH. Link the entries via their OH fields. */
4460 static struct ppc_link_hash_entry
*
4461 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4463 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4467 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4469 fdh
= (struct ppc_link_hash_entry
*)
4470 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4474 fdh
->is_func_descriptor
= 1;
4480 return ppc_follow_link (fdh
);
4483 /* Make a fake function descriptor sym for the code sym FH. */
4485 static struct ppc_link_hash_entry
*
4486 make_fdh (struct bfd_link_info
*info
,
4487 struct ppc_link_hash_entry
*fh
)
4491 struct bfd_link_hash_entry
*bh
;
4492 struct ppc_link_hash_entry
*fdh
;
4494 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4495 newsym
= bfd_make_empty_symbol (abfd
);
4496 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4497 newsym
->section
= bfd_und_section_ptr
;
4499 newsym
->flags
= BSF_WEAK
;
4502 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4503 newsym
->flags
, newsym
->section
,
4504 newsym
->value
, NULL
, FALSE
, FALSE
,
4508 fdh
= (struct ppc_link_hash_entry
*) bh
;
4509 fdh
->elf
.non_elf
= 0;
4511 fdh
->is_func_descriptor
= 1;
4518 /* Fix function descriptor symbols defined in .opd sections to be
4522 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
4523 struct bfd_link_info
*info
,
4524 Elf_Internal_Sym
*isym
,
4525 const char **name ATTRIBUTE_UNUSED
,
4526 flagword
*flags ATTRIBUTE_UNUSED
,
4528 bfd_vma
*value ATTRIBUTE_UNUSED
)
4530 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4531 elf_tdata (info
->output_bfd
)->has_ifunc_symbols
= TRUE
;
4532 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4534 else if (*sec
!= NULL
4535 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4536 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4541 /* This function makes an old ABI object reference to ".bar" cause the
4542 inclusion of a new ABI object archive that defines "bar".
4543 NAME is a symbol defined in an archive. Return a symbol in the hash
4544 table that might be satisfied by the archive symbols. */
4546 static struct elf_link_hash_entry
*
4547 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4548 struct bfd_link_info
*info
,
4551 struct elf_link_hash_entry
*h
;
4555 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4557 /* Don't return this sym if it is a fake function descriptor
4558 created by add_symbol_adjust. */
4559 && !(h
->root
.type
== bfd_link_hash_undefweak
4560 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4566 len
= strlen (name
);
4567 dot_name
= bfd_alloc (abfd
, len
+ 2);
4568 if (dot_name
== NULL
)
4569 return (struct elf_link_hash_entry
*) 0 - 1;
4571 memcpy (dot_name
+ 1, name
, len
+ 1);
4572 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4573 bfd_release (abfd
, dot_name
);
4577 /* This function satisfies all old ABI object references to ".bar" if a
4578 new ABI object defines "bar". Well, at least, undefined dot symbols
4579 are made weak. This stops later archive searches from including an
4580 object if we already have a function descriptor definition. It also
4581 prevents the linker complaining about undefined symbols.
4582 We also check and correct mismatched symbol visibility here. The
4583 most restrictive visibility of the function descriptor and the
4584 function entry symbol is used. */
4587 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4589 struct ppc_link_hash_table
*htab
;
4590 struct ppc_link_hash_entry
*fdh
;
4592 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4595 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4596 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4598 if (eh
->elf
.root
.root
.string
[0] != '.')
4601 htab
= ppc_hash_table (info
);
4602 fdh
= lookup_fdh (eh
, htab
);
4605 if (!info
->relocatable
4606 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4607 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4608 && eh
->elf
.ref_regular
)
4610 /* Make an undefweak function descriptor sym, which is enough to
4611 pull in an --as-needed shared lib, but won't cause link
4612 errors. Archives are handled elsewhere. */
4613 fdh
= make_fdh (info
, eh
);
4616 fdh
->elf
.ref_regular
= 1;
4621 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4622 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4623 if (entry_vis
< descr_vis
)
4624 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4625 else if (entry_vis
> descr_vis
)
4626 eh
->elf
.other
+= descr_vis
- entry_vis
;
4628 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4629 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4630 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4632 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4633 eh
->was_undefined
= 1;
4634 htab
->twiddled_syms
= 1;
4641 /* Process list of dot-symbols we made in link_hash_newfunc. */
4644 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4646 struct ppc_link_hash_table
*htab
;
4647 struct ppc_link_hash_entry
**p
, *eh
;
4649 htab
= ppc_hash_table (info
);
4650 if (!is_ppc64_elf (info
->output_bfd
))
4653 if (is_ppc64_elf (ibfd
))
4655 p
= &htab
->dot_syms
;
4656 while ((eh
= *p
) != NULL
)
4659 if (!add_symbol_adjust (eh
, info
))
4661 p
= &eh
->u
.next_dot_sym
;
4665 /* Clear the list for non-ppc64 input files. */
4666 p
= &htab
->dot_syms
;
4667 while ((eh
= *p
) != NULL
)
4670 p
= &eh
->u
.next_dot_sym
;
4673 /* We need to fix the undefs list for any syms we have twiddled to
4675 if (htab
->twiddled_syms
)
4677 bfd_link_repair_undef_list (&htab
->elf
.root
);
4678 htab
->twiddled_syms
= 0;
4683 /* Undo hash table changes when an --as-needed input file is determined
4684 not to be needed. */
4687 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4688 struct bfd_link_info
*info
)
4690 ppc_hash_table (info
)->dot_syms
= NULL
;
4694 static struct plt_entry
**
4695 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4696 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4698 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4699 struct plt_entry
**local_plt
;
4700 char *local_got_tls_masks
;
4702 if (local_got_ents
== NULL
)
4704 bfd_size_type size
= symtab_hdr
->sh_info
;
4706 size
*= (sizeof (*local_got_ents
)
4707 + sizeof (*local_plt
)
4708 + sizeof (*local_got_tls_masks
));
4709 local_got_ents
= bfd_zalloc (abfd
, size
);
4710 if (local_got_ents
== NULL
)
4712 elf_local_got_ents (abfd
) = local_got_ents
;
4715 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4717 struct got_entry
*ent
;
4719 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4720 if (ent
->addend
== r_addend
4721 && ent
->owner
== abfd
4722 && ent
->tls_type
== tls_type
)
4726 bfd_size_type amt
= sizeof (*ent
);
4727 ent
= bfd_alloc (abfd
, amt
);
4730 ent
->next
= local_got_ents
[r_symndx
];
4731 ent
->addend
= r_addend
;
4733 ent
->tls_type
= tls_type
;
4734 ent
->got
.refcount
= 0;
4735 local_got_ents
[r_symndx
] = ent
;
4737 ent
->got
.refcount
+= 1;
4740 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4741 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
4742 local_got_tls_masks
[r_symndx
] |= tls_type
;
4744 return local_plt
+ r_symndx
;
4748 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4750 struct plt_entry
*ent
;
4752 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4753 if (ent
->addend
== addend
)
4757 bfd_size_type amt
= sizeof (*ent
);
4758 ent
= bfd_alloc (abfd
, amt
);
4762 ent
->addend
= addend
;
4763 ent
->plt
.refcount
= 0;
4766 ent
->plt
.refcount
+= 1;
4771 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4773 return (r_type
== R_PPC64_REL24
4774 || r_type
== R_PPC64_REL14
4775 || r_type
== R_PPC64_REL14_BRTAKEN
4776 || r_type
== R_PPC64_REL14_BRNTAKEN
4777 || r_type
== R_PPC64_ADDR24
4778 || r_type
== R_PPC64_ADDR14
4779 || r_type
== R_PPC64_ADDR14_BRTAKEN
4780 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4783 /* Look through the relocs for a section during the first phase, and
4784 calculate needed space in the global offset table, procedure
4785 linkage table, and dynamic reloc sections. */
4788 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4789 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4791 struct ppc_link_hash_table
*htab
;
4792 Elf_Internal_Shdr
*symtab_hdr
;
4793 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4794 const Elf_Internal_Rela
*rel
;
4795 const Elf_Internal_Rela
*rel_end
;
4797 asection
**opd_sym_map
;
4798 struct elf_link_hash_entry
*tga
, *dottga
;
4800 if (info
->relocatable
)
4803 /* Don't do anything special with non-loaded, non-alloced sections.
4804 In particular, any relocs in such sections should not affect GOT
4805 and PLT reference counting (ie. we don't allow them to create GOT
4806 or PLT entries), there's no possibility or desire to optimize TLS
4807 relocs, and there's not much point in propagating relocs to shared
4808 libs that the dynamic linker won't relocate. */
4809 if ((sec
->flags
& SEC_ALLOC
) == 0)
4812 BFD_ASSERT (is_ppc64_elf (abfd
));
4814 htab
= ppc_hash_table (info
);
4815 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4816 FALSE
, FALSE
, TRUE
);
4817 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4818 FALSE
, FALSE
, TRUE
);
4819 symtab_hdr
= &elf_symtab_hdr (abfd
);
4821 sym_hashes
= elf_sym_hashes (abfd
);
4822 sym_hashes_end
= (sym_hashes
4823 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4824 - symtab_hdr
->sh_info
);
4828 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4830 /* Garbage collection needs some extra help with .opd sections.
4831 We don't want to necessarily keep everything referenced by
4832 relocs in .opd, as that would keep all functions. Instead,
4833 if we reference an .opd symbol (a function descriptor), we
4834 want to keep the function code symbol's section. This is
4835 easy for global symbols, but for local syms we need to keep
4836 information about the associated function section. */
4839 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4840 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4841 if (opd_sym_map
== NULL
)
4843 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4844 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4845 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4848 if (htab
->sfpr
== NULL
4849 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4852 rel_end
= relocs
+ sec
->reloc_count
;
4853 for (rel
= relocs
; rel
< rel_end
; rel
++)
4855 unsigned long r_symndx
;
4856 struct elf_link_hash_entry
*h
;
4857 enum elf_ppc64_reloc_type r_type
;
4859 struct _ppc64_elf_section_data
*ppc64_sec
;
4860 struct plt_entry
**ifunc
;
4862 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4863 if (r_symndx
< symtab_hdr
->sh_info
)
4867 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4868 h
= elf_follow_link (h
);
4875 if (h
->type
== STT_GNU_IFUNC
)
4878 ifunc
= &h
->plt
.plist
;
4883 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4888 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4890 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4891 rel
->r_addend
, PLT_IFUNC
);
4896 r_type
= ELF64_R_TYPE (rel
->r_info
);
4897 if (is_branch_reloc (r_type
))
4899 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4902 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4903 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4904 /* We have a new-style __tls_get_addr call with a marker
4908 /* Mark this section as having an old-style call. */
4909 sec
->has_tls_get_addr_call
= 1;
4912 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4914 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
4922 /* These special tls relocs tie a call to __tls_get_addr with
4923 its parameter symbol. */
4926 case R_PPC64_GOT_TLSLD16
:
4927 case R_PPC64_GOT_TLSLD16_LO
:
4928 case R_PPC64_GOT_TLSLD16_HI
:
4929 case R_PPC64_GOT_TLSLD16_HA
:
4930 tls_type
= TLS_TLS
| TLS_LD
;
4933 case R_PPC64_GOT_TLSGD16
:
4934 case R_PPC64_GOT_TLSGD16_LO
:
4935 case R_PPC64_GOT_TLSGD16_HI
:
4936 case R_PPC64_GOT_TLSGD16_HA
:
4937 tls_type
= TLS_TLS
| TLS_GD
;
4940 case R_PPC64_GOT_TPREL16_DS
:
4941 case R_PPC64_GOT_TPREL16_LO_DS
:
4942 case R_PPC64_GOT_TPREL16_HI
:
4943 case R_PPC64_GOT_TPREL16_HA
:
4944 if (!info
->executable
)
4945 info
->flags
|= DF_STATIC_TLS
;
4946 tls_type
= TLS_TLS
| TLS_TPREL
;
4949 case R_PPC64_GOT_DTPREL16_DS
:
4950 case R_PPC64_GOT_DTPREL16_LO_DS
:
4951 case R_PPC64_GOT_DTPREL16_HI
:
4952 case R_PPC64_GOT_DTPREL16_HA
:
4953 tls_type
= TLS_TLS
| TLS_DTPREL
;
4955 sec
->has_tls_reloc
= 1;
4959 case R_PPC64_GOT16_DS
:
4960 case R_PPC64_GOT16_HA
:
4961 case R_PPC64_GOT16_HI
:
4962 case R_PPC64_GOT16_LO
:
4963 case R_PPC64_GOT16_LO_DS
:
4964 /* This symbol requires a global offset table entry. */
4965 sec
->has_toc_reloc
= 1;
4966 if (ppc64_elf_tdata (abfd
)->got
== NULL
4967 && !create_got_section (abfd
, info
))
4972 struct ppc_link_hash_entry
*eh
;
4973 struct got_entry
*ent
;
4975 eh
= (struct ppc_link_hash_entry
*) h
;
4976 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4977 if (ent
->addend
== rel
->r_addend
4978 && ent
->owner
== abfd
4979 && ent
->tls_type
== tls_type
)
4983 bfd_size_type amt
= sizeof (*ent
);
4984 ent
= bfd_alloc (abfd
, amt
);
4987 ent
->next
= eh
->elf
.got
.glist
;
4988 ent
->addend
= rel
->r_addend
;
4990 ent
->tls_type
= tls_type
;
4991 ent
->got
.refcount
= 0;
4992 eh
->elf
.got
.glist
= ent
;
4994 ent
->got
.refcount
+= 1;
4995 eh
->tls_mask
|= tls_type
;
4998 /* This is a global offset table entry for a local symbol. */
4999 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5000 rel
->r_addend
, tls_type
))
5004 case R_PPC64_PLT16_HA
:
5005 case R_PPC64_PLT16_HI
:
5006 case R_PPC64_PLT16_LO
:
5009 /* This symbol requires a procedure linkage table entry. We
5010 actually build the entry in adjust_dynamic_symbol,
5011 because this might be a case of linking PIC code without
5012 linking in any dynamic objects, in which case we don't
5013 need to generate a procedure linkage table after all. */
5016 /* It does not make sense to have a procedure linkage
5017 table entry for a local symbol. */
5018 bfd_set_error (bfd_error_bad_value
);
5023 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5026 if (h
->root
.root
.string
[0] == '.'
5027 && h
->root
.root
.string
[1] != '\0')
5028 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5032 /* The following relocations don't need to propagate the
5033 relocation if linking a shared object since they are
5034 section relative. */
5035 case R_PPC64_SECTOFF
:
5036 case R_PPC64_SECTOFF_LO
:
5037 case R_PPC64_SECTOFF_HI
:
5038 case R_PPC64_SECTOFF_HA
:
5039 case R_PPC64_SECTOFF_DS
:
5040 case R_PPC64_SECTOFF_LO_DS
:
5041 case R_PPC64_DTPREL16
:
5042 case R_PPC64_DTPREL16_LO
:
5043 case R_PPC64_DTPREL16_HI
:
5044 case R_PPC64_DTPREL16_HA
:
5045 case R_PPC64_DTPREL16_DS
:
5046 case R_PPC64_DTPREL16_LO_DS
:
5047 case R_PPC64_DTPREL16_HIGHER
:
5048 case R_PPC64_DTPREL16_HIGHERA
:
5049 case R_PPC64_DTPREL16_HIGHEST
:
5050 case R_PPC64_DTPREL16_HIGHESTA
:
5055 case R_PPC64_REL16_LO
:
5056 case R_PPC64_REL16_HI
:
5057 case R_PPC64_REL16_HA
:
5061 case R_PPC64_TOC16_LO
:
5062 case R_PPC64_TOC16_HI
:
5063 case R_PPC64_TOC16_HA
:
5064 case R_PPC64_TOC16_DS
:
5065 case R_PPC64_TOC16_LO_DS
:
5066 sec
->has_toc_reloc
= 1;
5069 /* This relocation describes the C++ object vtable hierarchy.
5070 Reconstruct it for later use during GC. */
5071 case R_PPC64_GNU_VTINHERIT
:
5072 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5076 /* This relocation describes which C++ vtable entries are actually
5077 used. Record for later use during GC. */
5078 case R_PPC64_GNU_VTENTRY
:
5079 BFD_ASSERT (h
!= NULL
);
5081 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5086 case R_PPC64_REL14_BRTAKEN
:
5087 case R_PPC64_REL14_BRNTAKEN
:
5089 asection
*dest
= NULL
;
5091 /* Heuristic: If jumping outside our section, chances are
5092 we are going to need a stub. */
5095 /* If the sym is weak it may be overridden later, so
5096 don't assume we know where a weak sym lives. */
5097 if (h
->root
.type
== bfd_link_hash_defined
)
5098 dest
= h
->root
.u
.def
.section
;
5102 Elf_Internal_Sym
*isym
;
5104 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5109 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5113 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5118 if (h
!= NULL
&& ifunc
== NULL
)
5120 /* We may need a .plt entry if the function this reloc
5121 refers to is in a shared lib. */
5122 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5125 if (h
->root
.root
.string
[0] == '.'
5126 && h
->root
.root
.string
[1] != '\0')
5127 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5128 if (h
== tga
|| h
== dottga
)
5129 sec
->has_tls_reloc
= 1;
5133 case R_PPC64_TPREL64
:
5134 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5135 if (!info
->executable
)
5136 info
->flags
|= DF_STATIC_TLS
;
5139 case R_PPC64_DTPMOD64
:
5140 if (rel
+ 1 < rel_end
5141 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5142 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5143 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5145 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5148 case R_PPC64_DTPREL64
:
5149 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5151 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5152 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5153 /* This is the second reloc of a dtpmod, dtprel pair.
5154 Don't mark with TLS_DTPREL. */
5158 sec
->has_tls_reloc
= 1;
5161 struct ppc_link_hash_entry
*eh
;
5162 eh
= (struct ppc_link_hash_entry
*) h
;
5163 eh
->tls_mask
|= tls_type
;
5166 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5167 rel
->r_addend
, tls_type
))
5170 ppc64_sec
= ppc64_elf_section_data (sec
);
5171 if (ppc64_sec
->sec_type
!= sec_toc
)
5175 /* One extra to simplify get_tls_mask. */
5176 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5177 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5178 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5180 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5181 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5182 if (ppc64_sec
->u
.toc
.add
== NULL
)
5184 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5185 ppc64_sec
->sec_type
= sec_toc
;
5187 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5188 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5189 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5191 /* Mark the second slot of a GD or LD entry.
5192 -1 to indicate GD and -2 to indicate LD. */
5193 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5194 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5195 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5196 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5199 case R_PPC64_TPREL16
:
5200 case R_PPC64_TPREL16_LO
:
5201 case R_PPC64_TPREL16_HI
:
5202 case R_PPC64_TPREL16_HA
:
5203 case R_PPC64_TPREL16_DS
:
5204 case R_PPC64_TPREL16_LO_DS
:
5205 case R_PPC64_TPREL16_HIGHER
:
5206 case R_PPC64_TPREL16_HIGHERA
:
5207 case R_PPC64_TPREL16_HIGHEST
:
5208 case R_PPC64_TPREL16_HIGHESTA
:
5211 if (!info
->executable
)
5212 info
->flags
|= DF_STATIC_TLS
;
5217 case R_PPC64_ADDR64
:
5218 if (opd_sym_map
!= NULL
5219 && rel
+ 1 < rel_end
5220 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5224 if (h
->root
.root
.string
[0] == '.'
5225 && h
->root
.root
.string
[1] != 0
5226 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5229 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5234 Elf_Internal_Sym
*isym
;
5236 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5241 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5242 if (s
!= NULL
&& s
!= sec
)
5243 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5251 case R_PPC64_ADDR14
:
5252 case R_PPC64_ADDR14_BRNTAKEN
:
5253 case R_PPC64_ADDR14_BRTAKEN
:
5254 case R_PPC64_ADDR16
:
5255 case R_PPC64_ADDR16_DS
:
5256 case R_PPC64_ADDR16_HA
:
5257 case R_PPC64_ADDR16_HI
:
5258 case R_PPC64_ADDR16_HIGHER
:
5259 case R_PPC64_ADDR16_HIGHERA
:
5260 case R_PPC64_ADDR16_HIGHEST
:
5261 case R_PPC64_ADDR16_HIGHESTA
:
5262 case R_PPC64_ADDR16_LO
:
5263 case R_PPC64_ADDR16_LO_DS
:
5264 case R_PPC64_ADDR24
:
5265 case R_PPC64_ADDR32
:
5266 case R_PPC64_UADDR16
:
5267 case R_PPC64_UADDR32
:
5268 case R_PPC64_UADDR64
:
5270 if (h
!= NULL
&& !info
->shared
)
5271 /* We may need a copy reloc. */
5274 /* Don't propagate .opd relocs. */
5275 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5278 /* If we are creating a shared library, and this is a reloc
5279 against a global symbol, or a non PC relative reloc
5280 against a local symbol, then we need to copy the reloc
5281 into the shared library. However, if we are linking with
5282 -Bsymbolic, we do not need to copy a reloc against a
5283 global symbol which is defined in an object we are
5284 including in the link (i.e., DEF_REGULAR is set). At
5285 this point we have not seen all the input files, so it is
5286 possible that DEF_REGULAR is not set now but will be set
5287 later (it is never cleared). In case of a weak definition,
5288 DEF_REGULAR may be cleared later by a strong definition in
5289 a shared library. We account for that possibility below by
5290 storing information in the dyn_relocs field of the hash
5291 table entry. A similar situation occurs when creating
5292 shared libraries and symbol visibility changes render the
5295 If on the other hand, we are creating an executable, we
5296 may need to keep relocations for symbols satisfied by a
5297 dynamic library if we manage to avoid copy relocs for the
5301 && (must_be_dyn_reloc (info
, r_type
)
5303 && (! info
->symbolic
5304 || h
->root
.type
== bfd_link_hash_defweak
5305 || !h
->def_regular
))))
5306 || (ELIMINATE_COPY_RELOCS
5309 && (h
->root
.type
== bfd_link_hash_defweak
5310 || !h
->def_regular
))
5314 struct ppc_dyn_relocs
*p
;
5315 struct ppc_dyn_relocs
**head
;
5317 /* We must copy these reloc types into the output file.
5318 Create a reloc section in dynobj and make room for
5322 sreloc
= _bfd_elf_make_dynamic_reloc_section
5323 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5329 /* If this is a global symbol, we count the number of
5330 relocations we need for this symbol. */
5333 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5337 /* Track dynamic relocs needed for local syms too.
5338 We really need local syms available to do this
5342 Elf_Internal_Sym
*isym
;
5344 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5349 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5353 vpp
= &elf_section_data (s
)->local_dynrel
;
5354 head
= (struct ppc_dyn_relocs
**) vpp
;
5358 if (p
== NULL
|| p
->sec
!= sec
)
5360 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5371 if (!must_be_dyn_reloc (info
, r_type
))
5384 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5385 of the code entry point, and its section. */
5388 opd_entry_value (asection
*opd_sec
,
5390 asection
**code_sec
,
5393 bfd
*opd_bfd
= opd_sec
->owner
;
5394 Elf_Internal_Rela
*relocs
;
5395 Elf_Internal_Rela
*lo
, *hi
, *look
;
5398 /* No relocs implies we are linking a --just-symbols object. */
5399 if (opd_sec
->reloc_count
== 0)
5403 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
5404 return (bfd_vma
) -1;
5406 if (code_sec
!= NULL
)
5408 asection
*sec
, *likely
= NULL
;
5409 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5411 && (sec
->flags
& SEC_LOAD
) != 0
5412 && (sec
->flags
& SEC_ALLOC
) != 0)
5417 if (code_off
!= NULL
)
5418 *code_off
= val
- likely
->vma
;
5424 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5426 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5428 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5430 /* Go find the opd reloc at the sym address. */
5432 BFD_ASSERT (lo
!= NULL
);
5433 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5437 look
= lo
+ (hi
- lo
) / 2;
5438 if (look
->r_offset
< offset
)
5440 else if (look
->r_offset
> offset
)
5444 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5446 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5447 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5449 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5452 if (symndx
< symtab_hdr
->sh_info
)
5454 Elf_Internal_Sym
*sym
;
5456 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5459 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5460 symtab_hdr
->sh_info
,
5461 0, NULL
, NULL
, NULL
);
5464 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5468 val
= sym
->st_value
;
5469 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5470 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5474 struct elf_link_hash_entry
**sym_hashes
;
5475 struct elf_link_hash_entry
*rh
;
5477 sym_hashes
= elf_sym_hashes (opd_bfd
);
5478 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5479 rh
= elf_follow_link (rh
);
5480 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5481 || rh
->root
.type
== bfd_link_hash_defweak
);
5482 val
= rh
->root
.u
.def
.value
;
5483 sec
= rh
->root
.u
.def
.section
;
5485 val
+= look
->r_addend
;
5486 if (code_off
!= NULL
)
5488 if (code_sec
!= NULL
)
5490 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5491 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5500 /* If FDH is a function descriptor symbol, return the associated code
5501 entry symbol if it is defined. Return NULL otherwise. */
5503 static struct ppc_link_hash_entry
*
5504 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5506 if (fdh
->is_func_descriptor
)
5508 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5509 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5510 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5516 /* If FH is a function code entry symbol, return the associated
5517 function descriptor symbol if it is defined. Return NULL otherwise. */
5519 static struct ppc_link_hash_entry
*
5520 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5523 && fh
->oh
->is_func_descriptor
)
5525 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5526 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5527 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5533 /* Mark all our entry sym sections, both opd and code section. */
5536 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5538 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5539 struct bfd_sym_chain
*sym
;
5541 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5543 struct ppc_link_hash_entry
*eh
, *fh
;
5546 eh
= (struct ppc_link_hash_entry
*)
5547 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5550 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5551 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5554 fh
= defined_code_entry (eh
);
5557 sec
= fh
->elf
.root
.u
.def
.section
;
5558 sec
->flags
|= SEC_KEEP
;
5560 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5561 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5562 eh
->elf
.root
.u
.def
.value
,
5563 &sec
, NULL
) != (bfd_vma
) -1)
5564 sec
->flags
|= SEC_KEEP
;
5566 sec
= eh
->elf
.root
.u
.def
.section
;
5567 sec
->flags
|= SEC_KEEP
;
5571 /* Mark sections containing dynamically referenced symbols. When
5572 building shared libraries, we must assume that any visible symbol is
5576 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5578 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5579 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5580 struct ppc_link_hash_entry
*fdh
;
5582 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5583 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5585 /* Dynamic linking info is on the func descriptor sym. */
5586 fdh
= defined_func_desc (eh
);
5590 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5591 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5592 && (eh
->elf
.ref_dynamic
5593 || (!info
->executable
5594 && eh
->elf
.def_regular
5595 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5596 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5599 struct ppc_link_hash_entry
*fh
;
5601 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5603 /* Function descriptor syms cause the associated
5604 function code sym section to be marked. */
5605 fh
= defined_code_entry (eh
);
5608 code_sec
= fh
->elf
.root
.u
.def
.section
;
5609 code_sec
->flags
|= SEC_KEEP
;
5611 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5612 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5613 eh
->elf
.root
.u
.def
.value
,
5614 &code_sec
, NULL
) != (bfd_vma
) -1)
5615 code_sec
->flags
|= SEC_KEEP
;
5621 /* Return the section that should be marked against GC for a given
5625 ppc64_elf_gc_mark_hook (asection
*sec
,
5626 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
5627 Elf_Internal_Rela
*rel
,
5628 struct elf_link_hash_entry
*h
,
5629 Elf_Internal_Sym
*sym
)
5633 /* Syms return NULL if we're marking .opd, so we avoid marking all
5634 function sections, as all functions are referenced in .opd. */
5636 if (get_opd_info (sec
) != NULL
)
5641 enum elf_ppc64_reloc_type r_type
;
5642 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5644 r_type
= ELF64_R_TYPE (rel
->r_info
);
5647 case R_PPC64_GNU_VTINHERIT
:
5648 case R_PPC64_GNU_VTENTRY
:
5652 switch (h
->root
.type
)
5654 case bfd_link_hash_defined
:
5655 case bfd_link_hash_defweak
:
5656 eh
= (struct ppc_link_hash_entry
*) h
;
5657 fdh
= defined_func_desc (eh
);
5661 /* Function descriptor syms cause the associated
5662 function code sym section to be marked. */
5663 fh
= defined_code_entry (eh
);
5666 /* They also mark their opd section. */
5667 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5669 rsec
= fh
->elf
.root
.u
.def
.section
;
5671 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5672 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5673 eh
->elf
.root
.u
.def
.value
,
5674 &rsec
, NULL
) != (bfd_vma
) -1)
5675 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5677 rsec
= h
->root
.u
.def
.section
;
5680 case bfd_link_hash_common
:
5681 rsec
= h
->root
.u
.c
.p
->section
;
5691 struct _opd_sec_data
*opd
;
5693 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5694 opd
= get_opd_info (rsec
);
5695 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5699 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5706 /* Update the .got, .plt. and dynamic reloc reference counts for the
5707 section being removed. */
5710 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5711 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5713 struct ppc_link_hash_table
*htab
;
5714 Elf_Internal_Shdr
*symtab_hdr
;
5715 struct elf_link_hash_entry
**sym_hashes
;
5716 struct got_entry
**local_got_ents
;
5717 const Elf_Internal_Rela
*rel
, *relend
;
5719 if (info
->relocatable
)
5722 if ((sec
->flags
& SEC_ALLOC
) == 0)
5725 elf_section_data (sec
)->local_dynrel
= NULL
;
5727 htab
= ppc_hash_table (info
);
5728 symtab_hdr
= &elf_symtab_hdr (abfd
);
5729 sym_hashes
= elf_sym_hashes (abfd
);
5730 local_got_ents
= elf_local_got_ents (abfd
);
5732 relend
= relocs
+ sec
->reloc_count
;
5733 for (rel
= relocs
; rel
< relend
; rel
++)
5735 unsigned long r_symndx
;
5736 enum elf_ppc64_reloc_type r_type
;
5737 struct elf_link_hash_entry
*h
= NULL
;
5740 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5741 r_type
= ELF64_R_TYPE (rel
->r_info
);
5742 if (r_symndx
>= symtab_hdr
->sh_info
)
5744 struct ppc_link_hash_entry
*eh
;
5745 struct ppc_dyn_relocs
**pp
;
5746 struct ppc_dyn_relocs
*p
;
5748 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5749 h
= elf_follow_link (h
);
5750 eh
= (struct ppc_link_hash_entry
*) h
;
5752 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5755 /* Everything must go for SEC. */
5761 if (is_branch_reloc (r_type
))
5763 struct plt_entry
**ifunc
= NULL
;
5766 if (h
->type
== STT_GNU_IFUNC
)
5767 ifunc
= &h
->plt
.plist
;
5769 else if (local_got_ents
!= NULL
)
5771 struct plt_entry
**local_plt
= (struct plt_entry
**)
5772 (local_got_ents
+ symtab_hdr
->sh_info
);
5773 char *local_got_tls_masks
= (char *)
5774 (local_plt
+ symtab_hdr
->sh_info
);
5775 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5776 ifunc
= local_plt
+ r_symndx
;
5780 struct plt_entry
*ent
;
5782 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5783 if (ent
->addend
== rel
->r_addend
)
5787 if (ent
->plt
.refcount
> 0)
5788 ent
->plt
.refcount
-= 1;
5795 case R_PPC64_GOT_TLSLD16
:
5796 case R_PPC64_GOT_TLSLD16_LO
:
5797 case R_PPC64_GOT_TLSLD16_HI
:
5798 case R_PPC64_GOT_TLSLD16_HA
:
5799 tls_type
= TLS_TLS
| TLS_LD
;
5802 case R_PPC64_GOT_TLSGD16
:
5803 case R_PPC64_GOT_TLSGD16_LO
:
5804 case R_PPC64_GOT_TLSGD16_HI
:
5805 case R_PPC64_GOT_TLSGD16_HA
:
5806 tls_type
= TLS_TLS
| TLS_GD
;
5809 case R_PPC64_GOT_TPREL16_DS
:
5810 case R_PPC64_GOT_TPREL16_LO_DS
:
5811 case R_PPC64_GOT_TPREL16_HI
:
5812 case R_PPC64_GOT_TPREL16_HA
:
5813 tls_type
= TLS_TLS
| TLS_TPREL
;
5816 case R_PPC64_GOT_DTPREL16_DS
:
5817 case R_PPC64_GOT_DTPREL16_LO_DS
:
5818 case R_PPC64_GOT_DTPREL16_HI
:
5819 case R_PPC64_GOT_DTPREL16_HA
:
5820 tls_type
= TLS_TLS
| TLS_DTPREL
;
5824 case R_PPC64_GOT16_DS
:
5825 case R_PPC64_GOT16_HA
:
5826 case R_PPC64_GOT16_HI
:
5827 case R_PPC64_GOT16_LO
:
5828 case R_PPC64_GOT16_LO_DS
:
5831 struct got_entry
*ent
;
5836 ent
= local_got_ents
[r_symndx
];
5838 for (; ent
!= NULL
; ent
= ent
->next
)
5839 if (ent
->addend
== rel
->r_addend
5840 && ent
->owner
== abfd
5841 && ent
->tls_type
== tls_type
)
5845 if (ent
->got
.refcount
> 0)
5846 ent
->got
.refcount
-= 1;
5850 case R_PPC64_PLT16_HA
:
5851 case R_PPC64_PLT16_HI
:
5852 case R_PPC64_PLT16_LO
:
5856 case R_PPC64_REL14_BRNTAKEN
:
5857 case R_PPC64_REL14_BRTAKEN
:
5861 struct plt_entry
*ent
;
5863 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5864 if (ent
->addend
== rel
->r_addend
)
5868 if (ent
->plt
.refcount
> 0)
5869 ent
->plt
.refcount
-= 1;
5880 /* The maximum size of .sfpr. */
5881 #define SFPR_MAX (218*4)
5883 struct sfpr_def_parms
5885 const char name
[12];
5886 unsigned char lo
, hi
;
5887 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5888 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5891 /* Auto-generate _save*, _rest* functions in .sfpr. */
5894 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5896 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5898 size_t len
= strlen (parm
->name
);
5899 bfd_boolean writing
= FALSE
;
5902 memcpy (sym
, parm
->name
, len
);
5905 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5907 struct elf_link_hash_entry
*h
;
5909 sym
[len
+ 0] = i
/ 10 + '0';
5910 sym
[len
+ 1] = i
% 10 + '0';
5911 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5915 h
->root
.type
= bfd_link_hash_defined
;
5916 h
->root
.u
.def
.section
= htab
->sfpr
;
5917 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5920 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5922 if (htab
->sfpr
->contents
== NULL
)
5924 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5925 if (htab
->sfpr
->contents
== NULL
)
5931 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5933 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5935 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5936 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5944 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5946 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5951 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5953 p
= savegpr0 (abfd
, p
, r
);
5954 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5956 bfd_put_32 (abfd
, BLR
, p
);
5961 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5963 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5968 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5970 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5972 p
= restgpr0 (abfd
, p
, r
);
5973 bfd_put_32 (abfd
, MTLR_R0
, p
);
5977 p
= restgpr0 (abfd
, p
, 30);
5978 p
= restgpr0 (abfd
, p
, 31);
5980 bfd_put_32 (abfd
, BLR
, p
);
5985 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5987 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5992 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5994 p
= savegpr1 (abfd
, p
, r
);
5995 bfd_put_32 (abfd
, BLR
, p
);
6000 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6002 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6007 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6009 p
= restgpr1 (abfd
, p
, r
);
6010 bfd_put_32 (abfd
, BLR
, p
);
6015 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6017 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6022 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6024 p
= savefpr (abfd
, p
, r
);
6025 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6027 bfd_put_32 (abfd
, BLR
, p
);
6032 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6034 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6039 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6041 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6043 p
= restfpr (abfd
, p
, r
);
6044 bfd_put_32 (abfd
, MTLR_R0
, p
);
6048 p
= restfpr (abfd
, p
, 30);
6049 p
= restfpr (abfd
, p
, 31);
6051 bfd_put_32 (abfd
, BLR
, p
);
6056 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6058 p
= savefpr (abfd
, p
, r
);
6059 bfd_put_32 (abfd
, BLR
, p
);
6064 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6066 p
= restfpr (abfd
, p
, r
);
6067 bfd_put_32 (abfd
, BLR
, p
);
6072 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6074 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6076 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6081 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6083 p
= savevr (abfd
, p
, r
);
6084 bfd_put_32 (abfd
, BLR
, p
);
6089 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6091 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6093 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6098 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6100 p
= restvr (abfd
, p
, r
);
6101 bfd_put_32 (abfd
, BLR
, p
);
6105 /* Called via elf_link_hash_traverse to transfer dynamic linking
6106 information on function code symbol entries to their corresponding
6107 function descriptor symbol entries. */
6110 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6112 struct bfd_link_info
*info
;
6113 struct ppc_link_hash_table
*htab
;
6114 struct plt_entry
*ent
;
6115 struct ppc_link_hash_entry
*fh
;
6116 struct ppc_link_hash_entry
*fdh
;
6117 bfd_boolean force_local
;
6119 fh
= (struct ppc_link_hash_entry
*) h
;
6120 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6123 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
6124 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
6127 htab
= ppc_hash_table (info
);
6129 /* Resolve undefined references to dot-symbols as the value
6130 in the function descriptor, if we have one in a regular object.
6131 This is to satisfy cases like ".quad .foo". Calls to functions
6132 in dynamic objects are handled elsewhere. */
6133 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6134 && fh
->was_undefined
6135 && (fdh
= defined_func_desc (fh
)) != NULL
6136 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6137 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6138 fdh
->elf
.root
.u
.def
.value
,
6139 &fh
->elf
.root
.u
.def
.section
,
6140 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6142 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6143 fh
->elf
.forced_local
= 1;
6144 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6145 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6148 /* If this is a function code symbol, transfer dynamic linking
6149 information to the function descriptor symbol. */
6153 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6154 if (ent
->plt
.refcount
> 0)
6157 || fh
->elf
.root
.root
.string
[0] != '.'
6158 || fh
->elf
.root
.root
.string
[1] == '\0')
6161 /* Find the corresponding function descriptor symbol. Create it
6162 as undefined if necessary. */
6164 fdh
= lookup_fdh (fh
, htab
);
6166 && !info
->executable
6167 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6168 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6170 fdh
= make_fdh (info
, fh
);
6175 /* Fake function descriptors are made undefweak. If the function
6176 code symbol is strong undefined, make the fake sym the same.
6177 If the function code symbol is defined, then force the fake
6178 descriptor local; We can't support overriding of symbols in a
6179 shared library on a fake descriptor. */
6183 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6185 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6187 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6188 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6190 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6191 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6193 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6198 && !fdh
->elf
.forced_local
6199 && (!info
->executable
6200 || fdh
->elf
.def_dynamic
6201 || fdh
->elf
.ref_dynamic
6202 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6203 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6205 if (fdh
->elf
.dynindx
== -1)
6206 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6208 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6209 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6210 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6211 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6212 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6214 move_plt_plist (fh
, fdh
);
6215 fdh
->elf
.needs_plt
= 1;
6217 fdh
->is_func_descriptor
= 1;
6222 /* Now that the info is on the function descriptor, clear the
6223 function code sym info. Any function code syms for which we
6224 don't have a definition in a regular file, we force local.
6225 This prevents a shared library from exporting syms that have
6226 been imported from another library. Function code syms that
6227 are really in the library we must leave global to prevent the
6228 linker dragging in a definition from a static library. */
6229 force_local
= (!fh
->elf
.def_regular
6231 || !fdh
->elf
.def_regular
6232 || fdh
->elf
.forced_local
);
6233 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6238 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6239 this hook to a) provide some gcc support functions, and b) transfer
6240 dynamic linking information gathered so far on function code symbol
6241 entries, to their corresponding function descriptor symbol entries. */
6244 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6245 struct bfd_link_info
*info
)
6247 struct ppc_link_hash_table
*htab
;
6249 const struct sfpr_def_parms funcs
[] =
6251 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6252 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6253 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6254 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6255 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6256 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6257 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6258 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6259 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6260 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6261 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6262 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6265 htab
= ppc_hash_table (info
);
6266 if (htab
->sfpr
== NULL
)
6267 /* We don't have any relocs. */
6270 /* Provide any missing _save* and _rest* functions. */
6271 htab
->sfpr
->size
= 0;
6272 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6273 if (!sfpr_define (info
, &funcs
[i
]))
6276 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6278 if (htab
->sfpr
->size
== 0)
6279 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6284 /* Adjust a symbol defined by a dynamic object and referenced by a
6285 regular object. The current definition is in some section of the
6286 dynamic object, but we're not including those sections. We have to
6287 change the definition to something the rest of the link can
6291 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6292 struct elf_link_hash_entry
*h
)
6294 struct ppc_link_hash_table
*htab
;
6297 htab
= ppc_hash_table (info
);
6299 /* Deal with function syms. */
6300 if (h
->type
== STT_FUNC
6301 || h
->type
== STT_GNU_IFUNC
6304 /* Clear procedure linkage table information for any symbol that
6305 won't need a .plt entry. */
6306 struct plt_entry
*ent
;
6307 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6308 if (ent
->plt
.refcount
> 0)
6311 || (h
->type
!= STT_GNU_IFUNC
6312 && (SYMBOL_CALLS_LOCAL (info
, h
)
6313 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6314 && h
->root
.type
== bfd_link_hash_undefweak
))))
6316 h
->plt
.plist
= NULL
;
6321 h
->plt
.plist
= NULL
;
6323 /* If this is a weak symbol, and there is a real definition, the
6324 processor independent code will have arranged for us to see the
6325 real definition first, and we can just use the same value. */
6326 if (h
->u
.weakdef
!= NULL
)
6328 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6329 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6330 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6331 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6332 if (ELIMINATE_COPY_RELOCS
)
6333 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6337 /* If we are creating a shared library, we must presume that the
6338 only references to the symbol are via the global offset table.
6339 For such cases we need not do anything here; the relocations will
6340 be handled correctly by relocate_section. */
6344 /* If there are no references to this symbol that do not use the
6345 GOT, we don't need to generate a copy reloc. */
6346 if (!h
->non_got_ref
)
6349 /* Don't generate a copy reloc for symbols defined in the executable. */
6350 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6353 if (ELIMINATE_COPY_RELOCS
)
6355 struct ppc_link_hash_entry
* eh
;
6356 struct ppc_dyn_relocs
*p
;
6358 eh
= (struct ppc_link_hash_entry
*) h
;
6359 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6361 s
= p
->sec
->output_section
;
6362 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6366 /* If we didn't find any dynamic relocs in read-only sections, then
6367 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6375 if (h
->plt
.plist
!= NULL
)
6377 /* We should never get here, but unfortunately there are versions
6378 of gcc out there that improperly (for this ABI) put initialized
6379 function pointers, vtable refs and suchlike in read-only
6380 sections. Allow them to proceed, but warn that this might
6381 break at runtime. */
6382 (*_bfd_error_handler
)
6383 (_("copy reloc against `%s' requires lazy plt linking; "
6384 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6385 h
->root
.root
.string
);
6388 /* This is a reference to a symbol defined by a dynamic object which
6389 is not a function. */
6393 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6394 h
->root
.root
.string
);
6398 /* We must allocate the symbol in our .dynbss section, which will
6399 become part of the .bss section of the executable. There will be
6400 an entry for this symbol in the .dynsym section. The dynamic
6401 object will contain position independent code, so all references
6402 from the dynamic object to this symbol will go through the global
6403 offset table. The dynamic linker will use the .dynsym entry to
6404 determine the address it must put in the global offset table, so
6405 both the dynamic object and the regular object will refer to the
6406 same memory location for the variable. */
6408 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6409 to copy the initial value out of the dynamic object and into the
6410 runtime process image. We need to remember the offset into the
6411 .rela.bss section we are going to use. */
6412 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6414 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6420 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6423 /* If given a function descriptor symbol, hide both the function code
6424 sym and the descriptor. */
6426 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6427 struct elf_link_hash_entry
*h
,
6428 bfd_boolean force_local
)
6430 struct ppc_link_hash_entry
*eh
;
6431 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6433 eh
= (struct ppc_link_hash_entry
*) h
;
6434 if (eh
->is_func_descriptor
)
6436 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6441 struct ppc_link_hash_table
*htab
;
6444 /* We aren't supposed to use alloca in BFD because on
6445 systems which do not have alloca the version in libiberty
6446 calls xmalloc, which might cause the program to crash
6447 when it runs out of memory. This function doesn't have a
6448 return status, so there's no way to gracefully return an
6449 error. So cheat. We know that string[-1] can be safely
6450 accessed; It's either a string in an ELF string table,
6451 or allocated in an objalloc structure. */
6453 p
= eh
->elf
.root
.root
.string
- 1;
6456 htab
= ppc_hash_table (info
);
6457 fh
= (struct ppc_link_hash_entry
*)
6458 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6461 /* Unfortunately, if it so happens that the string we were
6462 looking for was allocated immediately before this string,
6463 then we overwrote the string terminator. That's the only
6464 reason the lookup should fail. */
6467 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6468 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6470 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6471 fh
= (struct ppc_link_hash_entry
*)
6472 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6481 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6486 get_sym_h (struct elf_link_hash_entry
**hp
,
6487 Elf_Internal_Sym
**symp
,
6490 Elf_Internal_Sym
**locsymsp
,
6491 unsigned long r_symndx
,
6494 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6496 if (r_symndx
>= symtab_hdr
->sh_info
)
6498 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6499 struct elf_link_hash_entry
*h
;
6501 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6502 h
= elf_follow_link (h
);
6510 if (symsecp
!= NULL
)
6512 asection
*symsec
= NULL
;
6513 if (h
->root
.type
== bfd_link_hash_defined
6514 || h
->root
.type
== bfd_link_hash_defweak
)
6515 symsec
= h
->root
.u
.def
.section
;
6519 if (tls_maskp
!= NULL
)
6521 struct ppc_link_hash_entry
*eh
;
6523 eh
= (struct ppc_link_hash_entry
*) h
;
6524 *tls_maskp
= &eh
->tls_mask
;
6529 Elf_Internal_Sym
*sym
;
6530 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6532 if (locsyms
== NULL
)
6534 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6535 if (locsyms
== NULL
)
6536 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6537 symtab_hdr
->sh_info
,
6538 0, NULL
, NULL
, NULL
);
6539 if (locsyms
== NULL
)
6541 *locsymsp
= locsyms
;
6543 sym
= locsyms
+ r_symndx
;
6551 if (symsecp
!= NULL
)
6552 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6554 if (tls_maskp
!= NULL
)
6556 struct got_entry
**lgot_ents
;
6560 lgot_ents
= elf_local_got_ents (ibfd
);
6561 if (lgot_ents
!= NULL
)
6563 struct plt_entry
**local_plt
= (struct plt_entry
**)
6564 (lgot_ents
+ symtab_hdr
->sh_info
);
6565 char *lgot_masks
= (char *)
6566 (local_plt
+ symtab_hdr
->sh_info
);
6567 tls_mask
= &lgot_masks
[r_symndx
];
6569 *tls_maskp
= tls_mask
;
6575 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6576 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6577 type suitable for optimization, and 1 otherwise. */
6580 get_tls_mask (char **tls_maskp
,
6581 unsigned long *toc_symndx
,
6582 bfd_vma
*toc_addend
,
6583 Elf_Internal_Sym
**locsymsp
,
6584 const Elf_Internal_Rela
*rel
,
6587 unsigned long r_symndx
;
6589 struct elf_link_hash_entry
*h
;
6590 Elf_Internal_Sym
*sym
;
6594 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6595 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6598 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6600 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6603 /* Look inside a TOC section too. */
6606 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6607 off
= h
->root
.u
.def
.value
;
6610 off
= sym
->st_value
;
6611 off
+= rel
->r_addend
;
6612 BFD_ASSERT (off
% 8 == 0);
6613 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6614 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6615 if (toc_symndx
!= NULL
)
6616 *toc_symndx
= r_symndx
;
6617 if (toc_addend
!= NULL
)
6618 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6619 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6622 || ((h
->root
.type
== bfd_link_hash_defined
6623 || h
->root
.type
== bfd_link_hash_defweak
)
6624 && !h
->def_dynamic
))
6625 && (next_r
== -1 || next_r
== -2))
6630 /* Adjust all global syms defined in opd sections. In gcc generated
6631 code for the old ABI, these will already have been done. */
6634 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6636 struct ppc_link_hash_entry
*eh
;
6638 struct _opd_sec_data
*opd
;
6640 if (h
->root
.type
== bfd_link_hash_indirect
)
6643 if (h
->root
.type
== bfd_link_hash_warning
)
6644 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6646 if (h
->root
.type
!= bfd_link_hash_defined
6647 && h
->root
.type
!= bfd_link_hash_defweak
)
6650 eh
= (struct ppc_link_hash_entry
*) h
;
6651 if (eh
->adjust_done
)
6654 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6655 opd
= get_opd_info (sym_sec
);
6656 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6658 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6661 /* This entry has been deleted. */
6662 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6665 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6666 if (elf_discarded_section (dsec
))
6668 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6672 eh
->elf
.root
.u
.def
.value
= 0;
6673 eh
->elf
.root
.u
.def
.section
= dsec
;
6676 eh
->elf
.root
.u
.def
.value
+= adjust
;
6677 eh
->adjust_done
= 1;
6682 /* Handles decrementing dynamic reloc counts for the reloc specified by
6683 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6684 have already been determined. */
6687 dec_dynrel_count (bfd_vma r_info
,
6689 struct bfd_link_info
*info
,
6690 Elf_Internal_Sym
**local_syms
,
6691 struct elf_link_hash_entry
*h
,
6694 enum elf_ppc64_reloc_type r_type
;
6695 struct ppc_dyn_relocs
*p
;
6696 struct ppc_dyn_relocs
**pp
;
6698 /* Can this reloc be dynamic? This switch, and later tests here
6699 should be kept in sync with the code in check_relocs. */
6700 r_type
= ELF64_R_TYPE (r_info
);
6706 case R_PPC64_TPREL16
:
6707 case R_PPC64_TPREL16_LO
:
6708 case R_PPC64_TPREL16_HI
:
6709 case R_PPC64_TPREL16_HA
:
6710 case R_PPC64_TPREL16_DS
:
6711 case R_PPC64_TPREL16_LO_DS
:
6712 case R_PPC64_TPREL16_HIGHER
:
6713 case R_PPC64_TPREL16_HIGHERA
:
6714 case R_PPC64_TPREL16_HIGHEST
:
6715 case R_PPC64_TPREL16_HIGHESTA
:
6719 case R_PPC64_TPREL64
:
6720 case R_PPC64_DTPMOD64
:
6721 case R_PPC64_DTPREL64
:
6722 case R_PPC64_ADDR64
:
6726 case R_PPC64_ADDR14
:
6727 case R_PPC64_ADDR14_BRNTAKEN
:
6728 case R_PPC64_ADDR14_BRTAKEN
:
6729 case R_PPC64_ADDR16
:
6730 case R_PPC64_ADDR16_DS
:
6731 case R_PPC64_ADDR16_HA
:
6732 case R_PPC64_ADDR16_HI
:
6733 case R_PPC64_ADDR16_HIGHER
:
6734 case R_PPC64_ADDR16_HIGHERA
:
6735 case R_PPC64_ADDR16_HIGHEST
:
6736 case R_PPC64_ADDR16_HIGHESTA
:
6737 case R_PPC64_ADDR16_LO
:
6738 case R_PPC64_ADDR16_LO_DS
:
6739 case R_PPC64_ADDR24
:
6740 case R_PPC64_ADDR32
:
6741 case R_PPC64_UADDR16
:
6742 case R_PPC64_UADDR32
:
6743 case R_PPC64_UADDR64
:
6748 if (local_syms
!= NULL
)
6750 unsigned long r_symndx
;
6751 Elf_Internal_Sym
*sym
;
6752 bfd
*ibfd
= sec
->owner
;
6754 r_symndx
= ELF64_R_SYM (r_info
);
6755 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6760 && (must_be_dyn_reloc (info
, r_type
)
6763 || h
->root
.type
== bfd_link_hash_defweak
6764 || !h
->def_regular
))))
6765 || (ELIMINATE_COPY_RELOCS
6768 && (h
->root
.type
== bfd_link_hash_defweak
6769 || !h
->def_regular
)))
6775 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6778 if (sym_sec
!= NULL
)
6780 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6781 pp
= (struct ppc_dyn_relocs
**) vpp
;
6785 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6786 pp
= (struct ppc_dyn_relocs
**) vpp
;
6789 /* elf_gc_sweep may have already removed all dyn relocs associated
6790 with local syms for a given section. Don't report a dynreloc
6796 while ((p
= *pp
) != NULL
)
6800 if (!must_be_dyn_reloc (info
, r_type
))
6810 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6812 bfd_set_error (bfd_error_bad_value
);
6816 /* Remove unused Official Procedure Descriptor entries. Currently we
6817 only remove those associated with functions in discarded link-once
6818 sections, or weakly defined functions that have been overridden. It
6819 would be possible to remove many more entries for statically linked
6823 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6824 bfd_boolean non_overlapping
)
6827 bfd_boolean some_edited
= FALSE
;
6828 asection
*need_pad
= NULL
;
6830 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6833 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6834 Elf_Internal_Shdr
*symtab_hdr
;
6835 Elf_Internal_Sym
*local_syms
;
6836 struct elf_link_hash_entry
**sym_hashes
;
6838 struct _opd_sec_data
*opd
;
6839 bfd_boolean need_edit
, add_aux_fields
;
6840 bfd_size_type cnt_16b
= 0;
6842 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6843 if (sec
== NULL
|| sec
->size
== 0)
6846 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6849 if (sec
->output_section
== bfd_abs_section_ptr
)
6852 /* Look through the section relocs. */
6853 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6857 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6858 sym_hashes
= elf_sym_hashes (ibfd
);
6860 /* Read the relocations. */
6861 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6863 if (relstart
== NULL
)
6866 /* First run through the relocs to check they are sane, and to
6867 determine whether we need to edit this opd section. */
6871 relend
= relstart
+ sec
->reloc_count
;
6872 for (rel
= relstart
; rel
< relend
; )
6874 enum elf_ppc64_reloc_type r_type
;
6875 unsigned long r_symndx
;
6877 struct elf_link_hash_entry
*h
;
6878 Elf_Internal_Sym
*sym
;
6880 /* .opd contains a regular array of 16 or 24 byte entries. We're
6881 only interested in the reloc pointing to a function entry
6883 if (rel
->r_offset
!= offset
6884 || rel
+ 1 >= relend
6885 || (rel
+ 1)->r_offset
!= offset
+ 8)
6887 /* If someone messes with .opd alignment then after a
6888 "ld -r" we might have padding in the middle of .opd.
6889 Also, there's nothing to prevent someone putting
6890 something silly in .opd with the assembler. No .opd
6891 optimization for them! */
6893 (*_bfd_error_handler
)
6894 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6899 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6900 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6902 (*_bfd_error_handler
)
6903 (_("%B: unexpected reloc type %u in .opd section"),
6909 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6910 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6914 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6916 const char *sym_name
;
6918 sym_name
= h
->root
.root
.string
;
6920 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6923 (*_bfd_error_handler
)
6924 (_("%B: undefined sym `%s' in .opd section"),
6930 /* opd entries are always for functions defined in the
6931 current input bfd. If the symbol isn't defined in the
6932 input bfd, then we won't be using the function in this
6933 bfd; It must be defined in a linkonce section in another
6934 bfd, or is weak. It's also possible that we are
6935 discarding the function due to a linker script /DISCARD/,
6936 which we test for via the output_section. */
6937 if (sym_sec
->owner
!= ibfd
6938 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6943 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6945 if (sec
->size
== offset
+ 24)
6950 if (rel
== relend
&& sec
->size
== offset
+ 16)
6958 if (rel
->r_offset
== offset
+ 24)
6960 else if (rel
->r_offset
!= offset
+ 16)
6962 else if (rel
+ 1 < relend
6963 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6964 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6969 else if (rel
+ 2 < relend
6970 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6971 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6980 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6982 if (need_edit
|| add_aux_fields
)
6984 Elf_Internal_Rela
*write_rel
;
6985 bfd_byte
*rptr
, *wptr
;
6986 bfd_byte
*new_contents
;
6991 new_contents
= NULL
;
6992 amt
= sec
->size
* sizeof (long) / 8;
6993 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
6994 opd
->adjust
= bfd_zalloc (obfd
, amt
);
6995 if (opd
->adjust
== NULL
)
6997 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
6999 /* This seems a waste of time as input .opd sections are all
7000 zeros as generated by gcc, but I suppose there's no reason
7001 this will always be so. We might start putting something in
7002 the third word of .opd entries. */
7003 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7006 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7011 if (local_syms
!= NULL
7012 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7014 if (elf_section_data (sec
)->relocs
!= relstart
)
7018 sec
->contents
= loc
;
7019 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7022 elf_section_data (sec
)->relocs
= relstart
;
7024 new_contents
= sec
->contents
;
7027 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7028 if (new_contents
== NULL
)
7032 wptr
= new_contents
;
7033 rptr
= sec
->contents
;
7035 write_rel
= relstart
;
7039 for (rel
= relstart
; rel
< relend
; rel
++)
7041 unsigned long r_symndx
;
7043 struct elf_link_hash_entry
*h
;
7044 Elf_Internal_Sym
*sym
;
7046 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7047 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7051 if (rel
->r_offset
== offset
)
7053 struct ppc_link_hash_entry
*fdh
= NULL
;
7055 /* See if the .opd entry is full 24 byte or
7056 16 byte (with fd_aux entry overlapped with next
7059 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7060 || (rel
+ 3 < relend
7061 && rel
[2].r_offset
== offset
+ 16
7062 && rel
[3].r_offset
== offset
+ 24
7063 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7064 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7068 && h
->root
.root
.string
[0] == '.')
7070 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7071 ppc_hash_table (info
));
7073 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7074 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7078 skip
= (sym_sec
->owner
!= ibfd
7079 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7082 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7084 /* Arrange for the function descriptor sym
7086 fdh
->elf
.root
.u
.def
.value
= 0;
7087 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7089 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7093 /* We'll be keeping this opd entry. */
7097 /* Redefine the function descriptor symbol to
7098 this location in the opd section. It is
7099 necessary to update the value here rather
7100 than using an array of adjustments as we do
7101 for local symbols, because various places
7102 in the generic ELF code use the value
7103 stored in u.def.value. */
7104 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7105 fdh
->adjust_done
= 1;
7108 /* Local syms are a bit tricky. We could
7109 tweak them as they can be cached, but
7110 we'd need to look through the local syms
7111 for the function descriptor sym which we
7112 don't have at the moment. So keep an
7113 array of adjustments. */
7114 opd
->adjust
[rel
->r_offset
/ 8]
7115 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7118 memcpy (wptr
, rptr
, opd_ent_size
);
7119 wptr
+= opd_ent_size
;
7120 if (add_aux_fields
&& opd_ent_size
== 16)
7122 memset (wptr
, '\0', 8);
7126 rptr
+= opd_ent_size
;
7127 offset
+= opd_ent_size
;
7133 && !info
->relocatable
7134 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7140 /* We need to adjust any reloc offsets to point to the
7141 new opd entries. While we're at it, we may as well
7142 remove redundant relocs. */
7143 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7144 if (write_rel
!= rel
)
7145 memcpy (write_rel
, rel
, sizeof (*rel
));
7150 sec
->size
= wptr
- new_contents
;
7151 sec
->reloc_count
= write_rel
- relstart
;
7154 free (sec
->contents
);
7155 sec
->contents
= new_contents
;
7158 /* Fudge the header size too, as this is used later in
7159 elf_bfd_final_link if we are emitting relocs. */
7160 elf_section_data (sec
)->rel_hdr
.sh_size
7161 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
7162 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
7165 else if (elf_section_data (sec
)->relocs
!= relstart
)
7168 if (local_syms
!= NULL
7169 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7171 if (!info
->keep_memory
)
7174 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7179 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7181 /* If we are doing a final link and the last .opd entry is just 16 byte
7182 long, add a 8 byte padding after it. */
7183 if (need_pad
!= NULL
&& !info
->relocatable
)
7187 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7189 BFD_ASSERT (need_pad
->size
> 0);
7191 p
= bfd_malloc (need_pad
->size
+ 8);
7195 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7196 p
, 0, need_pad
->size
))
7199 need_pad
->contents
= p
;
7200 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7204 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7208 need_pad
->contents
= p
;
7211 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7212 need_pad
->size
+= 8;
7218 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7221 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
7223 struct ppc_link_hash_table
*htab
;
7225 htab
= ppc_hash_table (info
);
7226 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7227 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7228 FALSE
, FALSE
, TRUE
));
7229 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7230 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7231 FALSE
, FALSE
, TRUE
));
7232 return _bfd_elf_tls_setup (obfd
, info
);
7235 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7239 branch_reloc_hash_match (const bfd
*ibfd
,
7240 const Elf_Internal_Rela
*rel
,
7241 const struct ppc_link_hash_entry
*hash1
,
7242 const struct ppc_link_hash_entry
*hash2
)
7244 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7245 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7246 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7248 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7250 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7251 struct elf_link_hash_entry
*h
;
7253 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7254 h
= elf_follow_link (h
);
7255 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7261 /* Run through all the TLS relocs looking for optimization
7262 opportunities. The linker has been hacked (see ppc64elf.em) to do
7263 a preliminary section layout so that we know the TLS segment
7264 offsets. We can't optimize earlier because some optimizations need
7265 to know the tp offset, and we need to optimize before allocating
7266 dynamic relocations. */
7269 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7273 struct ppc_link_hash_table
*htab
;
7276 if (info
->relocatable
|| !info
->executable
)
7279 htab
= ppc_hash_table (info
);
7280 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7282 Elf_Internal_Sym
*locsyms
= NULL
;
7283 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7284 unsigned char *toc_ref
= NULL
;
7286 /* Look at all the sections for this file. Make two passes over
7287 the relocs. On the first pass, mark toc entries involved
7288 with tls relocs, and check that tls relocs involved in
7289 setting up a tls_get_addr call are indeed followed by such a
7290 call. If they are not, exclude them from the optimizations
7291 done on the second pass. */
7292 for (pass
= 0; pass
< 2; ++pass
)
7293 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7294 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7296 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7298 /* Read the relocations. */
7299 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7301 if (relstart
== NULL
)
7304 relend
= relstart
+ sec
->reloc_count
;
7305 for (rel
= relstart
; rel
< relend
; rel
++)
7307 enum elf_ppc64_reloc_type r_type
;
7308 unsigned long r_symndx
;
7309 struct elf_link_hash_entry
*h
;
7310 Elf_Internal_Sym
*sym
;
7313 char tls_set
, tls_clear
, tls_type
= 0;
7315 bfd_boolean ok_tprel
, is_local
;
7316 long toc_ref_index
= 0;
7317 int expecting_tls_get_addr
= 0;
7319 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7320 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7324 if (elf_section_data (sec
)->relocs
!= relstart
)
7326 if (toc_ref
!= NULL
)
7329 && (elf_symtab_hdr (ibfd
).contents
7330 != (unsigned char *) locsyms
))
7337 if (h
->root
.type
!= bfd_link_hash_defined
7338 && h
->root
.type
!= bfd_link_hash_defweak
)
7340 value
= h
->root
.u
.def
.value
;
7343 /* Symbols referenced by TLS relocs must be of type
7344 STT_TLS. So no need for .opd local sym adjust. */
7345 value
= sym
->st_value
;
7353 value
+= sym_sec
->output_offset
;
7354 value
+= sym_sec
->output_section
->vma
;
7355 value
-= htab
->elf
.tls_sec
->vma
;
7356 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7357 < (bfd_vma
) 1 << 32);
7360 r_type
= ELF64_R_TYPE (rel
->r_info
);
7363 case R_PPC64_GOT_TLSLD16
:
7364 case R_PPC64_GOT_TLSLD16_LO
:
7365 expecting_tls_get_addr
= 1;
7368 case R_PPC64_GOT_TLSLD16_HI
:
7369 case R_PPC64_GOT_TLSLD16_HA
:
7370 /* These relocs should never be against a symbol
7371 defined in a shared lib. Leave them alone if
7372 that turns out to be the case. */
7379 tls_type
= TLS_TLS
| TLS_LD
;
7382 case R_PPC64_GOT_TLSGD16
:
7383 case R_PPC64_GOT_TLSGD16_LO
:
7384 expecting_tls_get_addr
= 1;
7387 case R_PPC64_GOT_TLSGD16_HI
:
7388 case R_PPC64_GOT_TLSGD16_HA
:
7394 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7396 tls_type
= TLS_TLS
| TLS_GD
;
7399 case R_PPC64_GOT_TPREL16_DS
:
7400 case R_PPC64_GOT_TPREL16_LO_DS
:
7401 case R_PPC64_GOT_TPREL16_HI
:
7402 case R_PPC64_GOT_TPREL16_HA
:
7407 tls_clear
= TLS_TPREL
;
7408 tls_type
= TLS_TLS
| TLS_TPREL
;
7414 case R_PPC64_TOC16_LO
:
7418 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7421 /* Mark this toc entry as referenced by a TLS
7422 code sequence. We can do that now in the
7423 case of R_PPC64_TLS, and after checking for
7424 tls_get_addr for the TOC16 relocs. */
7425 if (toc_ref
== NULL
)
7427 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7428 if (toc_ref
== NULL
)
7432 value
= h
->root
.u
.def
.value
;
7434 value
= sym
->st_value
;
7435 value
+= rel
->r_addend
;
7436 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7437 toc_ref_index
= value
/ 8;
7438 if (r_type
== R_PPC64_TLS
7439 || r_type
== R_PPC64_TLSGD
7440 || r_type
== R_PPC64_TLSLD
)
7442 toc_ref
[toc_ref_index
] = 1;
7446 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7451 expecting_tls_get_addr
= 2;
7454 case R_PPC64_TPREL64
:
7458 || !toc_ref
[rel
->r_offset
/ 8])
7463 tls_set
= TLS_EXPLICIT
;
7464 tls_clear
= TLS_TPREL
;
7469 case R_PPC64_DTPMOD64
:
7473 || !toc_ref
[rel
->r_offset
/ 8])
7475 if (rel
+ 1 < relend
7477 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7478 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7482 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7485 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7494 tls_set
= TLS_EXPLICIT
;
7505 if (!expecting_tls_get_addr
7506 || !sec
->has_tls_get_addr_call
)
7509 if (rel
+ 1 < relend
7510 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7512 htab
->tls_get_addr_fd
))
7514 if (expecting_tls_get_addr
== 2)
7516 /* Check for toc tls entries. */
7520 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7525 if (retval
> 1 && toc_tls
!= NULL
)
7526 toc_ref
[toc_ref_index
] = 1;
7531 if (expecting_tls_get_addr
!= 1)
7534 /* Uh oh, we didn't find the expected call. We
7535 could just mark this symbol to exclude it
7536 from tls optimization but it's safer to skip
7537 the entire section. */
7538 sec
->has_tls_reloc
= 0;
7542 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7544 struct plt_entry
*ent
;
7545 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7548 if (ent
->addend
== 0)
7550 if (ent
->plt
.refcount
> 0)
7552 ent
->plt
.refcount
-= 1;
7553 expecting_tls_get_addr
= 0;
7559 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7561 struct plt_entry
*ent
;
7562 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7565 if (ent
->addend
== 0)
7567 if (ent
->plt
.refcount
> 0)
7568 ent
->plt
.refcount
-= 1;
7576 if ((tls_set
& TLS_EXPLICIT
) == 0)
7578 struct got_entry
*ent
;
7580 /* Adjust got entry for this reloc. */
7584 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7586 for (; ent
!= NULL
; ent
= ent
->next
)
7587 if (ent
->addend
== rel
->r_addend
7588 && ent
->owner
== ibfd
7589 && ent
->tls_type
== tls_type
)
7596 /* We managed to get rid of a got entry. */
7597 if (ent
->got
.refcount
> 0)
7598 ent
->got
.refcount
-= 1;
7603 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7604 we'll lose one or two dyn relocs. */
7605 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7609 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7611 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7617 *tls_mask
|= tls_set
;
7618 *tls_mask
&= ~tls_clear
;
7621 if (elf_section_data (sec
)->relocs
!= relstart
)
7625 if (toc_ref
!= NULL
)
7629 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7631 if (!info
->keep_memory
)
7634 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7640 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7641 the values of any global symbols in a toc section that has been
7642 edited. Globals in toc sections should be a rarity, so this function
7643 sets a flag if any are found in toc sections other than the one just
7644 edited, so that futher hash table traversals can be avoided. */
7646 struct adjust_toc_info
7649 unsigned long *skip
;
7650 bfd_boolean global_toc_syms
;
7654 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7656 struct ppc_link_hash_entry
*eh
;
7657 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7659 if (h
->root
.type
== bfd_link_hash_indirect
)
7662 if (h
->root
.type
== bfd_link_hash_warning
)
7663 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7665 if (h
->root
.type
!= bfd_link_hash_defined
7666 && h
->root
.type
!= bfd_link_hash_defweak
)
7669 eh
= (struct ppc_link_hash_entry
*) h
;
7670 if (eh
->adjust_done
)
7673 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7675 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
7676 if (skip
!= (unsigned long) -1)
7677 eh
->elf
.root
.u
.def
.value
-= skip
;
7680 (*_bfd_error_handler
)
7681 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
7682 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
7683 eh
->elf
.root
.u
.def
.value
= 0;
7685 eh
->adjust_done
= 1;
7687 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7688 toc_inf
->global_toc_syms
= TRUE
;
7693 /* Examine all relocs referencing .toc sections in order to remove
7694 unused .toc entries. */
7697 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7700 struct adjust_toc_info toc_inf
;
7702 toc_inf
.global_toc_syms
= TRUE
;
7703 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7705 asection
*toc
, *sec
;
7706 Elf_Internal_Shdr
*symtab_hdr
;
7707 Elf_Internal_Sym
*local_syms
;
7708 struct elf_link_hash_entry
**sym_hashes
;
7709 Elf_Internal_Rela
*relstart
, *rel
;
7710 unsigned long *skip
, *drop
;
7711 unsigned char *used
;
7712 unsigned char *keep
, last
, some_unused
;
7714 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7717 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7718 || elf_discarded_section (toc
))
7722 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7723 sym_hashes
= elf_sym_hashes (ibfd
);
7725 /* Look at sections dropped from the final link. */
7728 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7730 if (sec
->reloc_count
== 0
7731 || !elf_discarded_section (sec
)
7732 || get_opd_info (sec
)
7733 || (sec
->flags
& SEC_ALLOC
) == 0
7734 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7737 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7738 if (relstart
== NULL
)
7741 /* Run through the relocs to see which toc entries might be
7743 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7745 enum elf_ppc64_reloc_type r_type
;
7746 unsigned long r_symndx
;
7748 struct elf_link_hash_entry
*h
;
7749 Elf_Internal_Sym
*sym
;
7752 r_type
= ELF64_R_TYPE (rel
->r_info
);
7759 case R_PPC64_TOC16_LO
:
7760 case R_PPC64_TOC16_HI
:
7761 case R_PPC64_TOC16_HA
:
7762 case R_PPC64_TOC16_DS
:
7763 case R_PPC64_TOC16_LO_DS
:
7767 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7768 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7776 val
= h
->root
.u
.def
.value
;
7778 val
= sym
->st_value
;
7779 val
+= rel
->r_addend
;
7781 if (val
>= toc
->size
)
7784 /* Anything in the toc ought to be aligned to 8 bytes.
7785 If not, don't mark as unused. */
7791 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7799 if (elf_section_data (sec
)->relocs
!= relstart
)
7806 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7810 if (local_syms
!= NULL
7811 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7815 && elf_section_data (sec
)->relocs
!= relstart
)
7822 /* Now check all kept sections that might reference the toc.
7823 Check the toc itself last. */
7824 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
7827 sec
= (sec
== toc
? NULL
7828 : sec
->next
== NULL
? toc
7829 : sec
->next
== toc
&& toc
->next
? toc
->next
7834 if (sec
->reloc_count
== 0
7835 || elf_discarded_section (sec
)
7836 || get_opd_info (sec
)
7837 || (sec
->flags
& SEC_ALLOC
) == 0
7838 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7841 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7842 if (relstart
== NULL
)
7845 /* Mark toc entries referenced as used. */
7848 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7850 enum elf_ppc64_reloc_type r_type
;
7851 unsigned long r_symndx
;
7853 struct elf_link_hash_entry
*h
;
7854 Elf_Internal_Sym
*sym
;
7857 r_type
= ELF64_R_TYPE (rel
->r_info
);
7861 case R_PPC64_TOC16_LO
:
7862 case R_PPC64_TOC16_HI
:
7863 case R_PPC64_TOC16_HA
:
7864 case R_PPC64_TOC16_DS
:
7865 case R_PPC64_TOC16_LO_DS
:
7866 /* In case we're taking addresses of toc entries. */
7867 case R_PPC64_ADDR64
:
7874 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7875 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7886 val
= h
->root
.u
.def
.value
;
7888 val
= sym
->st_value
;
7889 val
+= rel
->r_addend
;
7891 if (val
>= toc
->size
)
7894 /* For the toc section, we only mark as used if
7895 this entry itself isn't unused. */
7898 && (used
[rel
->r_offset
>> 3]
7899 || !skip
[rel
->r_offset
>> 3]))
7900 /* Do all the relocs again, to catch reference
7909 /* Merge the used and skip arrays. Assume that TOC
7910 doublewords not appearing as either used or unused belong
7911 to to an entry more than one doubleword in size. */
7912 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7913 drop
< skip
+ (toc
->size
+ 7) / 8;
7934 bfd_byte
*contents
, *src
;
7937 /* Shuffle the toc contents, and at the same time convert the
7938 skip array from booleans into offsets. */
7939 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7942 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7944 for (src
= contents
, off
= 0, drop
= skip
;
7945 src
< contents
+ toc
->size
;
7950 *drop
= (unsigned long) -1;
7956 memcpy (src
- off
, src
, 8);
7959 toc
->rawsize
= toc
->size
;
7960 toc
->size
= src
- contents
- off
;
7962 if (toc
->reloc_count
!= 0)
7964 Elf_Internal_Rela
*wrel
;
7967 /* Read toc relocs. */
7968 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7970 if (relstart
== NULL
)
7973 /* Remove unused toc relocs, and adjust those we keep. */
7975 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7976 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7978 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7979 wrel
->r_info
= rel
->r_info
;
7980 wrel
->r_addend
= rel
->r_addend
;
7983 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7984 &local_syms
, NULL
, NULL
))
7987 toc
->reloc_count
= wrel
- relstart
;
7988 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7989 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7990 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7993 /* Adjust addends for relocs against the toc section sym. */
7994 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7996 if (sec
->reloc_count
== 0
7997 || elf_discarded_section (sec
))
8000 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8002 if (relstart
== NULL
)
8005 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8007 enum elf_ppc64_reloc_type r_type
;
8008 unsigned long r_symndx
;
8010 struct elf_link_hash_entry
*h
;
8011 Elf_Internal_Sym
*sym
;
8013 r_type
= ELF64_R_TYPE (rel
->r_info
);
8020 case R_PPC64_TOC16_LO
:
8021 case R_PPC64_TOC16_HI
:
8022 case R_PPC64_TOC16_HA
:
8023 case R_PPC64_TOC16_DS
:
8024 case R_PPC64_TOC16_LO_DS
:
8025 case R_PPC64_ADDR64
:
8029 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8030 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8034 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
8037 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
8041 /* We shouldn't have local or global symbols defined in the TOC,
8042 but handle them anyway. */
8043 if (local_syms
!= NULL
)
8045 Elf_Internal_Sym
*sym
;
8047 for (sym
= local_syms
;
8048 sym
< local_syms
+ symtab_hdr
->sh_info
;
8050 if (sym
->st_value
!= 0
8051 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8053 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
8054 sym
->st_value
-= skip
[sym
->st_value
>> 3];
8057 (*_bfd_error_handler
)
8058 (_("%s defined in removed toc entry"),
8059 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8062 sym
->st_shndx
= SHN_ABS
;
8064 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8068 /* Finally, adjust any global syms defined in the toc. */
8069 if (toc_inf
.global_toc_syms
)
8072 toc_inf
.skip
= skip
;
8073 toc_inf
.global_toc_syms
= FALSE
;
8074 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8079 if (local_syms
!= NULL
8080 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8082 if (!info
->keep_memory
)
8085 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8093 /* Allocate space in .plt, .got and associated reloc sections for
8097 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8099 struct bfd_link_info
*info
;
8100 struct ppc_link_hash_table
*htab
;
8102 struct ppc_link_hash_entry
*eh
;
8103 struct ppc_dyn_relocs
*p
;
8104 struct got_entry
*gent
;
8106 if (h
->root
.type
== bfd_link_hash_indirect
)
8109 if (h
->root
.type
== bfd_link_hash_warning
)
8110 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8112 info
= (struct bfd_link_info
*) inf
;
8113 htab
= ppc_hash_table (info
);
8115 if ((htab
->elf
.dynamic_sections_created
8117 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8118 || h
->type
== STT_GNU_IFUNC
)
8120 struct plt_entry
*pent
;
8121 bfd_boolean doneone
= FALSE
;
8122 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8123 if (pent
->plt
.refcount
> 0)
8125 if (!htab
->elf
.dynamic_sections_created
8126 || h
->dynindx
== -1)
8129 pent
->plt
.offset
= s
->size
;
8130 s
->size
+= PLT_ENTRY_SIZE
;
8135 /* If this is the first .plt entry, make room for the special
8139 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8141 pent
->plt
.offset
= s
->size
;
8143 /* Make room for this entry. */
8144 s
->size
+= PLT_ENTRY_SIZE
;
8146 /* Make room for the .glink code. */
8149 s
->size
+= GLINK_CALL_STUB_SIZE
;
8150 /* We need bigger stubs past index 32767. */
8151 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8155 /* We also need to make an entry in the .rela.plt section. */
8158 s
->size
+= sizeof (Elf64_External_Rela
);
8162 pent
->plt
.offset
= (bfd_vma
) -1;
8165 h
->plt
.plist
= NULL
;
8171 h
->plt
.plist
= NULL
;
8175 eh
= (struct ppc_link_hash_entry
*) h
;
8176 /* Run through the TLS GD got entries first if we're changing them
8178 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8179 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8180 if (gent
->got
.refcount
> 0
8181 && (gent
->tls_type
& TLS_GD
) != 0)
8183 /* This was a GD entry that has been converted to TPREL. If
8184 there happens to be a TPREL entry we can use that one. */
8185 struct got_entry
*ent
;
8186 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8187 if (ent
->got
.refcount
> 0
8188 && (ent
->tls_type
& TLS_TPREL
) != 0
8189 && ent
->addend
== gent
->addend
8190 && ent
->owner
== gent
->owner
)
8192 gent
->got
.refcount
= 0;
8196 /* If not, then we'll be using our own TPREL entry. */
8197 if (gent
->got
.refcount
!= 0)
8198 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8201 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8202 if (gent
->got
.refcount
> 0)
8207 /* Make sure this symbol is output as a dynamic symbol.
8208 Undefined weak syms won't yet be marked as dynamic,
8209 nor will all TLS symbols. */
8210 if (h
->dynindx
== -1
8212 && h
->type
!= STT_GNU_IFUNC
8213 && htab
->elf
.dynamic_sections_created
)
8215 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8219 if ((gent
->tls_type
& TLS_LD
) != 0
8222 ppc64_tlsld_got (gent
->owner
)->refcount
+= 1;
8223 gent
->got
.offset
= (bfd_vma
) -1;
8227 if (!is_ppc64_elf (gent
->owner
))
8230 s
= ppc64_elf_tdata (gent
->owner
)->got
;
8231 gent
->got
.offset
= s
->size
;
8233 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
8234 dyn
= htab
->elf
.dynamic_sections_created
;
8237 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8238 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8239 || h
->root
.type
!= bfd_link_hash_undefweak
))
8240 rsec
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8241 else if (h
->type
== STT_GNU_IFUNC
)
8242 rsec
= htab
->reliplt
;
8244 rsec
->size
+= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8245 ? 2 * sizeof (Elf64_External_Rela
)
8246 : sizeof (Elf64_External_Rela
));
8249 gent
->got
.offset
= (bfd_vma
) -1;
8251 if (eh
->dyn_relocs
== NULL
8252 || (!htab
->elf
.dynamic_sections_created
8253 && h
->type
!= STT_GNU_IFUNC
))
8256 /* In the shared -Bsymbolic case, discard space allocated for
8257 dynamic pc-relative relocs against symbols which turn out to be
8258 defined in regular objects. For the normal shared case, discard
8259 space for relocs that have become local due to symbol visibility
8264 /* Relocs that use pc_count are those that appear on a call insn,
8265 or certain REL relocs (see must_be_dyn_reloc) that can be
8266 generated via assembly. We want calls to protected symbols to
8267 resolve directly to the function rather than going via the plt.
8268 If people want function pointer comparisons to work as expected
8269 then they should avoid writing weird assembly. */
8270 if (SYMBOL_CALLS_LOCAL (info
, h
))
8272 struct ppc_dyn_relocs
**pp
;
8274 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8276 p
->count
-= p
->pc_count
;
8285 /* Also discard relocs on undefined weak syms with non-default
8287 if (eh
->dyn_relocs
!= NULL
8288 && h
->root
.type
== bfd_link_hash_undefweak
)
8290 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8291 eh
->dyn_relocs
= NULL
;
8293 /* Make sure this symbol is output as a dynamic symbol.
8294 Undefined weak syms won't yet be marked as dynamic. */
8295 else if (h
->dynindx
== -1
8296 && !h
->forced_local
)
8298 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8303 else if (h
->type
== STT_GNU_IFUNC
)
8305 if (!h
->non_got_ref
)
8306 eh
->dyn_relocs
= NULL
;
8308 else if (ELIMINATE_COPY_RELOCS
)
8310 /* For the non-shared case, discard space for relocs against
8311 symbols which turn out to need copy relocs or are not
8317 /* Make sure this symbol is output as a dynamic symbol.
8318 Undefined weak syms won't yet be marked as dynamic. */
8319 if (h
->dynindx
== -1
8320 && !h
->forced_local
)
8322 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8326 /* If that succeeded, we know we'll be keeping all the
8328 if (h
->dynindx
!= -1)
8332 eh
->dyn_relocs
= NULL
;
8337 /* Finally, allocate space. */
8338 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8340 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8341 if (!htab
->elf
.dynamic_sections_created
)
8342 sreloc
= htab
->reliplt
;
8343 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8349 /* Find any dynamic relocs that apply to read-only sections. */
8352 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8354 struct ppc_link_hash_entry
*eh
;
8355 struct ppc_dyn_relocs
*p
;
8357 if (h
->root
.type
== bfd_link_hash_warning
)
8358 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8360 eh
= (struct ppc_link_hash_entry
*) h
;
8361 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8363 asection
*s
= p
->sec
->output_section
;
8365 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8367 struct bfd_link_info
*info
= inf
;
8369 info
->flags
|= DF_TEXTREL
;
8371 /* Not an error, just cut short the traversal. */
8378 /* Set the sizes of the dynamic sections. */
8381 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8382 struct bfd_link_info
*info
)
8384 struct ppc_link_hash_table
*htab
;
8390 htab
= ppc_hash_table (info
);
8391 dynobj
= htab
->elf
.dynobj
;
8395 if (htab
->elf
.dynamic_sections_created
)
8397 /* Set the contents of the .interp section to the interpreter. */
8398 if (info
->executable
)
8400 s
= bfd_get_section_by_name (dynobj
, ".interp");
8403 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8404 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8408 /* Set up .got offsets for local syms, and space for local dynamic
8410 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8412 struct got_entry
**lgot_ents
;
8413 struct got_entry
**end_lgot_ents
;
8414 struct plt_entry
**local_plt
;
8415 struct plt_entry
**end_local_plt
;
8417 bfd_size_type locsymcount
;
8418 Elf_Internal_Shdr
*symtab_hdr
;
8421 if (!is_ppc64_elf (ibfd
))
8424 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8426 struct ppc_dyn_relocs
*p
;
8428 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8430 if (!bfd_is_abs_section (p
->sec
)
8431 && bfd_is_abs_section (p
->sec
->output_section
))
8433 /* Input section has been discarded, either because
8434 it is a copy of a linkonce section or due to
8435 linker script /DISCARD/, so we'll be discarding
8438 else if (p
->count
!= 0)
8440 srel
= elf_section_data (p
->sec
)->sreloc
;
8441 if (!htab
->elf
.dynamic_sections_created
)
8442 srel
= htab
->reliplt
;
8443 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8444 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8445 info
->flags
|= DF_TEXTREL
;
8450 lgot_ents
= elf_local_got_ents (ibfd
);
8454 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8455 locsymcount
= symtab_hdr
->sh_info
;
8456 end_lgot_ents
= lgot_ents
+ locsymcount
;
8457 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8458 end_local_plt
= local_plt
+ locsymcount
;
8459 lgot_masks
= (char *) end_local_plt
;
8460 s
= ppc64_elf_tdata (ibfd
)->got
;
8461 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8462 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8464 struct got_entry
*ent
;
8466 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
8467 if (ent
->got
.refcount
> 0)
8469 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8471 ppc64_tlsld_got (ibfd
)->refcount
+= 1;
8472 ent
->got
.offset
= (bfd_vma
) -1;
8476 unsigned int num
= 1;
8477 ent
->got
.offset
= s
->size
;
8478 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8482 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8483 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
8484 htab
->reliplt
->size
+= num
* sizeof (Elf64_External_Rela
);
8488 ent
->got
.offset
= (bfd_vma
) -1;
8491 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8492 for (; local_plt
< end_local_plt
; ++local_plt
)
8494 struct plt_entry
*ent
;
8496 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
8497 if (ent
->plt
.refcount
> 0)
8499 asection
*s
= htab
->iplt
;
8501 ent
->plt
.offset
= s
->size
;
8502 s
->size
+= PLT_ENTRY_SIZE
;
8504 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
8507 ent
->plt
.offset
= (bfd_vma
) -1;
8511 /* Allocate global sym .plt and .got entries, and space for global
8512 sym dynamic relocs. */
8513 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8515 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8517 if (!is_ppc64_elf (ibfd
))
8520 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
8522 s
= ppc64_elf_tdata (ibfd
)->got
;
8523 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
8527 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8528 srel
->size
+= sizeof (Elf64_External_Rela
);
8532 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
8535 /* We now have determined the sizes of the various dynamic sections.
8536 Allocate memory for them. */
8538 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8540 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8543 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
8544 /* These haven't been allocated yet; don't strip. */
8546 else if (s
== htab
->got
8550 || s
== htab
->dynbss
)
8552 /* Strip this section if we don't need it; see the
8555 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8559 if (s
!= htab
->relplt
)
8562 /* We use the reloc_count field as a counter if we need
8563 to copy relocs into the output file. */
8569 /* It's not one of our sections, so don't allocate space. */
8575 /* If we don't need this section, strip it from the
8576 output file. This is mostly to handle .rela.bss and
8577 .rela.plt. We must create both sections in
8578 create_dynamic_sections, because they must be created
8579 before the linker maps input sections to output
8580 sections. The linker does that before
8581 adjust_dynamic_symbol is called, and it is that
8582 function which decides whether anything needs to go
8583 into these sections. */
8584 s
->flags
|= SEC_EXCLUDE
;
8588 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8591 /* Allocate memory for the section contents. We use bfd_zalloc
8592 here in case unused entries are not reclaimed before the
8593 section's contents are written out. This should not happen,
8594 but this way if it does we get a R_PPC64_NONE reloc in .rela
8595 sections instead of garbage.
8596 We also rely on the section contents being zero when writing
8598 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
8599 if (s
->contents
== NULL
)
8603 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8605 if (!is_ppc64_elf (ibfd
))
8608 s
= ppc64_elf_tdata (ibfd
)->got
;
8609 if (s
!= NULL
&& s
!= htab
->got
)
8612 s
->flags
|= SEC_EXCLUDE
;
8615 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8616 if (s
->contents
== NULL
)
8620 s
= ppc64_elf_tdata (ibfd
)->relgot
;
8624 s
->flags
|= SEC_EXCLUDE
;
8627 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8628 if (s
->contents
== NULL
)
8636 if (htab
->elf
.dynamic_sections_created
)
8638 /* Add some entries to the .dynamic section. We fill in the
8639 values later, in ppc64_elf_finish_dynamic_sections, but we
8640 must add the entries now so that we get the correct size for
8641 the .dynamic section. The DT_DEBUG entry is filled in by the
8642 dynamic linker and used by the debugger. */
8643 #define add_dynamic_entry(TAG, VAL) \
8644 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8646 if (info
->executable
)
8648 if (!add_dynamic_entry (DT_DEBUG
, 0))
8652 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8654 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8655 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8656 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8657 || !add_dynamic_entry (DT_JMPREL
, 0)
8658 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8664 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8665 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8671 if (!add_dynamic_entry (DT_RELA
, 0)
8672 || !add_dynamic_entry (DT_RELASZ
, 0)
8673 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8676 /* If any dynamic relocs apply to a read-only section,
8677 then we need a DT_TEXTREL entry. */
8678 if ((info
->flags
& DF_TEXTREL
) == 0)
8679 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
8681 if ((info
->flags
& DF_TEXTREL
) != 0)
8683 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8688 #undef add_dynamic_entry
8693 /* Determine the type of stub needed, if any, for a call. */
8695 static inline enum ppc_stub_type
8696 ppc_type_of_stub (asection
*input_sec
,
8697 const Elf_Internal_Rela
*rel
,
8698 struct ppc_link_hash_entry
**hash
,
8699 struct plt_entry
**plt_ent
,
8700 bfd_vma destination
)
8702 struct ppc_link_hash_entry
*h
= *hash
;
8704 bfd_vma branch_offset
;
8705 bfd_vma max_branch_offset
;
8706 enum elf_ppc64_reloc_type r_type
;
8710 struct plt_entry
*ent
;
8711 struct ppc_link_hash_entry
*fdh
= h
;
8713 && h
->oh
->is_func_descriptor
)
8714 fdh
= ppc_follow_link (h
->oh
);
8716 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8717 if (ent
->addend
== rel
->r_addend
8718 && ent
->plt
.offset
!= (bfd_vma
) -1)
8722 return ppc_stub_plt_call
;
8725 /* Here, we know we don't have a plt entry. If we don't have a
8726 either a defined function descriptor or a defined entry symbol
8727 in a regular object file, then it is pointless trying to make
8728 any other type of stub. */
8729 if (!((fdh
->elf
.root
.type
== bfd_link_hash_defined
8730 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8731 && fdh
->elf
.root
.u
.def
.section
->output_section
!= NULL
)
8732 && !((h
->elf
.root
.type
== bfd_link_hash_defined
8733 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8734 && h
->elf
.root
.u
.def
.section
->output_section
!= NULL
))
8735 return ppc_stub_none
;
8737 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
8739 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
8740 struct plt_entry
**local_plt
= (struct plt_entry
**)
8741 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
8742 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
8744 if (local_plt
[r_symndx
] != NULL
)
8746 struct plt_entry
*ent
;
8748 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
8749 if (ent
->addend
== rel
->r_addend
8750 && ent
->plt
.offset
!= (bfd_vma
) -1)
8753 return ppc_stub_plt_call
;
8758 /* Determine where the call point is. */
8759 location
= (input_sec
->output_offset
8760 + input_sec
->output_section
->vma
8763 branch_offset
= destination
- location
;
8764 r_type
= ELF64_R_TYPE (rel
->r_info
);
8766 /* Determine if a long branch stub is needed. */
8767 max_branch_offset
= 1 << 25;
8768 if (r_type
!= R_PPC64_REL24
)
8769 max_branch_offset
= 1 << 15;
8771 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
8772 /* We need a stub. Figure out whether a long_branch or plt_branch
8774 return ppc_stub_long_branch
;
8776 return ppc_stub_none
;
8779 /* Build a .plt call stub. */
8781 static inline bfd_byte
*
8782 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
8784 #define PPC_LO(v) ((v) & 0xffff)
8785 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8786 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8788 if (PPC_HA (offset
) != 0)
8792 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
8793 r
[1].r_offset
= r
[0].r_offset
+ 8;
8794 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8795 r
[1].r_addend
= r
[0].r_addend
;
8796 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8798 r
[2].r_offset
= r
[1].r_offset
+ 4;
8799 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
8800 r
[2].r_addend
= r
[0].r_addend
;
8804 r
[2].r_offset
= r
[1].r_offset
+ 8;
8805 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8806 r
[2].r_addend
= r
[0].r_addend
+ 8;
8807 r
[3].r_offset
= r
[2].r_offset
+ 4;
8808 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8809 r
[3].r_addend
= r
[0].r_addend
+ 16;
8812 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
8813 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8814 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8815 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8817 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
8820 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8821 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
8822 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
8823 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8830 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8831 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8833 r
[1].r_offset
= r
[0].r_offset
+ 4;
8834 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
8835 r
[1].r_addend
= r
[0].r_addend
;
8839 r
[1].r_offset
= r
[0].r_offset
+ 8;
8840 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8841 r
[1].r_addend
= r
[0].r_addend
+ 16;
8842 r
[2].r_offset
= r
[1].r_offset
+ 4;
8843 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8844 r
[2].r_addend
= r
[0].r_addend
+ 8;
8847 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8848 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
8849 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8851 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
8854 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8855 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
8856 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
8857 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8862 static Elf_Internal_Rela
*
8863 get_relocs (asection
*sec
, int count
)
8865 Elf_Internal_Rela
*relocs
;
8866 struct bfd_elf_section_data
*elfsec_data
;
8868 elfsec_data
= elf_section_data (sec
);
8869 relocs
= elfsec_data
->relocs
;
8872 bfd_size_type relsize
;
8873 relsize
= sec
->reloc_count
* sizeof (*relocs
);
8874 relocs
= bfd_alloc (sec
->owner
, relsize
);
8877 elfsec_data
->relocs
= relocs
;
8878 elfsec_data
->rel_hdr
.sh_size
= (sec
->reloc_count
8879 * sizeof (Elf64_External_Rela
));
8880 elfsec_data
->rel_hdr
.sh_entsize
= sizeof (Elf64_External_Rela
);
8881 sec
->reloc_count
= 0;
8883 relocs
+= sec
->reloc_count
;
8884 sec
->reloc_count
+= count
;
8889 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8891 struct ppc_stub_hash_entry
*stub_entry
;
8892 struct ppc_branch_hash_entry
*br_entry
;
8893 struct bfd_link_info
*info
;
8894 struct ppc_link_hash_table
*htab
;
8899 Elf_Internal_Rela
*r
;
8902 /* Massage our args to the form they really have. */
8903 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8906 htab
= ppc_hash_table (info
);
8908 /* Make a note of the offset within the stubs for this entry. */
8909 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
8910 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
8912 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
8913 switch (stub_entry
->stub_type
)
8915 case ppc_stub_long_branch
:
8916 case ppc_stub_long_branch_r2off
:
8917 /* Branches are relative. This is where we are going to. */
8918 off
= dest
= (stub_entry
->target_value
8919 + stub_entry
->target_section
->output_offset
8920 + stub_entry
->target_section
->output_section
->vma
);
8922 /* And this is where we are coming from. */
8923 off
-= (stub_entry
->stub_offset
8924 + stub_entry
->stub_sec
->output_offset
8925 + stub_entry
->stub_sec
->output_section
->vma
);
8928 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8932 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8933 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8934 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8937 if (PPC_HA (r2off
) != 0)
8940 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8943 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8947 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8949 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8951 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
8952 stub_entry
->root
.string
);
8953 htab
->stub_error
= TRUE
;
8957 if (info
->emitrelocations
)
8959 r
= get_relocs (stub_entry
->stub_sec
, 1);
8962 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8963 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8965 if (stub_entry
->h
!= NULL
)
8967 struct elf_link_hash_entry
**hashes
;
8968 unsigned long symndx
;
8969 struct ppc_link_hash_entry
*h
;
8971 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8974 bfd_size_type hsize
;
8976 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8977 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8980 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8981 htab
->stub_globals
= 1;
8983 symndx
= htab
->stub_globals
++;
8985 hashes
[symndx
] = &h
->elf
;
8986 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8987 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8988 h
= ppc_follow_link (h
->oh
);
8989 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8990 /* H is an opd symbol. The addend must be zero. */
8994 off
= (h
->elf
.root
.u
.def
.value
8995 + h
->elf
.root
.u
.def
.section
->output_offset
8996 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9003 case ppc_stub_plt_branch
:
9004 case ppc_stub_plt_branch_r2off
:
9005 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9006 stub_entry
->root
.string
+ 9,
9008 if (br_entry
== NULL
)
9010 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9011 stub_entry
->root
.string
);
9012 htab
->stub_error
= TRUE
;
9016 dest
= (stub_entry
->target_value
9017 + stub_entry
->target_section
->output_offset
9018 + stub_entry
->target_section
->output_section
->vma
);
9020 bfd_put_64 (htab
->brlt
->owner
, dest
,
9021 htab
->brlt
->contents
+ br_entry
->offset
);
9023 if (br_entry
->iter
== htab
->stub_iteration
)
9027 if (htab
->relbrlt
!= NULL
)
9029 /* Create a reloc for the branch lookup table entry. */
9030 Elf_Internal_Rela rela
;
9033 rela
.r_offset
= (br_entry
->offset
9034 + htab
->brlt
->output_offset
9035 + htab
->brlt
->output_section
->vma
);
9036 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9037 rela
.r_addend
= dest
;
9039 rl
= htab
->relbrlt
->contents
;
9040 rl
+= (htab
->relbrlt
->reloc_count
++
9041 * sizeof (Elf64_External_Rela
));
9042 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9044 else if (info
->emitrelocations
)
9046 r
= get_relocs (htab
->brlt
, 1);
9049 /* brlt, being SEC_LINKER_CREATED does not go through the
9050 normal reloc processing. Symbols and offsets are not
9051 translated from input file to output file form, so
9052 set up the offset per the output file. */
9053 r
->r_offset
= (br_entry
->offset
9054 + htab
->brlt
->output_offset
9055 + htab
->brlt
->output_section
->vma
);
9056 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9061 dest
= (br_entry
->offset
9062 + htab
->brlt
->output_offset
9063 + htab
->brlt
->output_section
->vma
);
9066 - elf_gp (htab
->brlt
->output_section
->owner
)
9067 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9069 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9071 (*_bfd_error_handler
)
9072 (_("linkage table error against `%s'"),
9073 stub_entry
->root
.string
);
9074 bfd_set_error (bfd_error_bad_value
);
9075 htab
->stub_error
= TRUE
;
9079 if (info
->emitrelocations
)
9081 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9084 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9085 if (bfd_big_endian (info
->output_bfd
))
9087 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9089 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9090 r
[0].r_addend
= dest
;
9091 if (PPC_HA (off
) != 0)
9093 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9094 r
[1].r_offset
= r
[0].r_offset
+ 4;
9095 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9096 r
[1].r_addend
= r
[0].r_addend
;
9100 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9102 if (PPC_HA (off
) != 0)
9105 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9107 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9112 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9119 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9120 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9121 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9124 if (PPC_HA (off
) != 0)
9127 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9129 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9134 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9138 if (PPC_HA (r2off
) != 0)
9141 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9144 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9147 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9149 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9152 case ppc_stub_plt_call
:
9153 if (stub_entry
->h
!= NULL
9154 && stub_entry
->h
->is_func_descriptor
9155 && stub_entry
->h
->oh
!= NULL
)
9157 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9159 /* If the old-ABI "dot-symbol" is undefined make it weak so
9160 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9161 FIXME: We used to define the symbol on one of the call
9162 stubs instead, which is why we test symbol section id
9163 against htab->top_id in various places. Likely all
9164 these checks could now disappear. */
9165 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9166 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9169 /* Now build the stub. */
9170 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9171 if (dest
>= (bfd_vma
) -2)
9175 if (!htab
->elf
.dynamic_sections_created
9176 || stub_entry
->h
== NULL
9177 || stub_entry
->h
->elf
.dynindx
== -1)
9180 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9182 if (stub_entry
->h
== NULL
9183 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9185 Elf_Internal_Rela rela
;
9188 rela
.r_offset
= dest
;
9189 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9190 rela
.r_addend
= (stub_entry
->target_value
9191 + stub_entry
->target_section
->output_offset
9192 + stub_entry
->target_section
->output_section
->vma
);
9194 rl
= (htab
->reliplt
->contents
9195 + (htab
->reliplt
->reloc_count
++
9196 * sizeof (Elf64_External_Rela
)));
9197 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9198 stub_entry
->plt_ent
->plt
.offset
|= 1;
9202 - elf_gp (plt
->output_section
->owner
)
9203 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9205 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9207 (*_bfd_error_handler
)
9208 (_("linkage table error against `%s'"),
9209 stub_entry
->h
!= NULL
9210 ? stub_entry
->h
->elf
.root
.root
.string
9212 bfd_set_error (bfd_error_bad_value
);
9213 htab
->stub_error
= TRUE
;
9218 if (info
->emitrelocations
)
9220 r
= get_relocs (stub_entry
->stub_sec
,
9221 (2 + (PPC_HA (off
) != 0)
9222 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9225 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9226 if (bfd_big_endian (info
->output_bfd
))
9228 r
[0].r_addend
= dest
;
9230 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9239 stub_entry
->stub_sec
->size
+= size
;
9241 if (htab
->emit_stub_syms
)
9243 struct elf_link_hash_entry
*h
;
9246 const char *const stub_str
[] = { "long_branch",
9247 "long_branch_r2off",
9252 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9253 len2
= strlen (stub_entry
->root
.string
);
9254 name
= bfd_malloc (len1
+ len2
+ 2);
9257 memcpy (name
, stub_entry
->root
.string
, 9);
9258 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9259 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9260 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9263 if (h
->root
.type
== bfd_link_hash_new
)
9265 h
->root
.type
= bfd_link_hash_defined
;
9266 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9267 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9270 h
->ref_regular_nonweak
= 1;
9271 h
->forced_local
= 1;
9279 /* As above, but don't actually build the stub. Just bump offset so
9280 we know stub section sizes, and select plt_branch stubs where
9281 long_branch stubs won't do. */
9284 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9286 struct ppc_stub_hash_entry
*stub_entry
;
9287 struct bfd_link_info
*info
;
9288 struct ppc_link_hash_table
*htab
;
9292 /* Massage our args to the form they really have. */
9293 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9296 htab
= ppc_hash_table (info
);
9298 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9301 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9302 if (off
>= (bfd_vma
) -2)
9305 if (!htab
->elf
.dynamic_sections_created
9306 || stub_entry
->h
== NULL
9307 || stub_entry
->h
->elf
.dynindx
== -1)
9309 off
+= (plt
->output_offset
9310 + plt
->output_section
->vma
9311 - elf_gp (plt
->output_section
->owner
)
9312 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9314 size
= PLT_CALL_STUB_SIZE
;
9315 if (PPC_HA (off
) == 0)
9317 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9319 if (info
->emitrelocations
)
9321 stub_entry
->stub_sec
->reloc_count
9322 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9323 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9328 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9332 off
= (stub_entry
->target_value
9333 + stub_entry
->target_section
->output_offset
9334 + stub_entry
->target_section
->output_section
->vma
);
9335 off
-= (stub_entry
->stub_sec
->size
9336 + stub_entry
->stub_sec
->output_offset
9337 + stub_entry
->stub_sec
->output_section
->vma
);
9339 /* Reset the stub type from the plt variant in case we now
9340 can reach with a shorter stub. */
9341 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9342 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9345 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9347 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9348 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9350 if (PPC_HA (r2off
) != 0)
9355 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9356 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9358 struct ppc_branch_hash_entry
*br_entry
;
9360 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9361 stub_entry
->root
.string
+ 9,
9363 if (br_entry
== NULL
)
9365 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9366 stub_entry
->root
.string
);
9367 htab
->stub_error
= TRUE
;
9371 if (br_entry
->iter
!= htab
->stub_iteration
)
9373 br_entry
->iter
= htab
->stub_iteration
;
9374 br_entry
->offset
= htab
->brlt
->size
;
9375 htab
->brlt
->size
+= 8;
9377 if (htab
->relbrlt
!= NULL
)
9378 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9379 else if (info
->emitrelocations
)
9381 htab
->brlt
->reloc_count
+= 1;
9382 htab
->brlt
->flags
|= SEC_RELOC
;
9386 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9387 off
= (br_entry
->offset
9388 + htab
->brlt
->output_offset
9389 + htab
->brlt
->output_section
->vma
9390 - elf_gp (htab
->brlt
->output_section
->owner
)
9391 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9393 if (info
->emitrelocations
)
9395 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9396 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9399 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9402 if (PPC_HA (off
) != 0)
9408 if (PPC_HA (off
) != 0)
9411 if (PPC_HA (r2off
) != 0)
9415 else if (info
->emitrelocations
)
9417 stub_entry
->stub_sec
->reloc_count
+= 1;
9418 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9422 stub_entry
->stub_sec
->size
+= size
;
9426 /* Set up various things so that we can make a list of input sections
9427 for each output section included in the link. Returns -1 on error,
9428 0 when no stubs will be needed, and 1 on success. */
9431 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
9432 struct bfd_link_info
*info
,
9436 int top_id
, top_index
, id
;
9438 asection
**input_list
;
9440 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9442 htab
->no_multi_toc
= no_multi_toc
;
9444 if (htab
->brlt
== NULL
)
9447 /* Find the top input section id. */
9448 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9450 input_bfd
= input_bfd
->link_next
)
9452 for (section
= input_bfd
->sections
;
9454 section
= section
->next
)
9456 if (top_id
< section
->id
)
9457 top_id
= section
->id
;
9461 htab
->top_id
= top_id
;
9462 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9463 htab
->stub_group
= bfd_zmalloc (amt
);
9464 if (htab
->stub_group
== NULL
)
9467 /* Set toc_off for com, und, abs and ind sections. */
9468 for (id
= 0; id
< 3; id
++)
9469 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
9471 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
9473 /* We can't use output_bfd->section_count here to find the top output
9474 section index as some sections may have been removed, and
9475 strip_excluded_output_sections doesn't renumber the indices. */
9476 for (section
= output_bfd
->sections
, top_index
= 0;
9478 section
= section
->next
)
9480 if (top_index
< section
->index
)
9481 top_index
= section
->index
;
9484 htab
->top_index
= top_index
;
9485 amt
= sizeof (asection
*) * (top_index
+ 1);
9486 input_list
= bfd_zmalloc (amt
);
9487 htab
->input_list
= input_list
;
9488 if (input_list
== NULL
)
9494 /* The linker repeatedly calls this function for each TOC input section
9495 and linker generated GOT section. Group input bfds such that the toc
9496 within a group is less than 64k in size. Will break with cute linker
9497 scripts that play games with dot in the output toc section. */
9500 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
9502 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9504 if (!htab
->no_multi_toc
)
9506 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
9507 bfd_vma off
= addr
- htab
->toc_curr
;
9509 if (off
+ isec
->size
> 0x10000)
9510 htab
->toc_curr
= addr
;
9512 elf_gp (isec
->owner
) = (htab
->toc_curr
9513 - elf_gp (isec
->output_section
->owner
)
9518 /* Called after the last call to the above function. */
9521 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
9523 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9525 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
9527 /* toc_curr tracks the TOC offset used for code sections below in
9528 ppc64_elf_next_input_section. Start off at 0x8000. */
9529 htab
->toc_curr
= TOC_BASE_OFF
;
9532 /* No toc references were found in ISEC. If the code in ISEC makes no
9533 calls, then there's no need to use toc adjusting stubs when branching
9534 into ISEC. Actually, indirect calls from ISEC are OK as they will
9535 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9536 needed, and 2 if a cyclical call-graph was found but no other reason
9537 for a stub was detected. If called from the top level, a return of
9538 2 means the same as a return of 0. */
9541 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
9543 Elf_Internal_Rela
*relstart
, *rel
;
9544 Elf_Internal_Sym
*local_syms
;
9546 struct ppc_link_hash_table
*htab
;
9548 /* We know none of our code bearing sections will need toc stubs. */
9549 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
9552 if (isec
->size
== 0)
9555 if (isec
->output_section
== NULL
)
9558 if (isec
->reloc_count
== 0)
9561 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
9563 if (relstart
== NULL
)
9566 /* Look for branches to outside of this section. */
9569 htab
= ppc_hash_table (info
);
9570 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
9572 enum elf_ppc64_reloc_type r_type
;
9573 unsigned long r_symndx
;
9574 struct elf_link_hash_entry
*h
;
9575 struct ppc_link_hash_entry
*eh
;
9576 Elf_Internal_Sym
*sym
;
9578 struct _opd_sec_data
*opd
;
9582 r_type
= ELF64_R_TYPE (rel
->r_info
);
9583 if (r_type
!= R_PPC64_REL24
9584 && r_type
!= R_PPC64_REL14
9585 && r_type
!= R_PPC64_REL14_BRTAKEN
9586 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9589 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9590 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
9597 /* Calls to dynamic lib functions go through a plt call stub
9599 eh
= (struct ppc_link_hash_entry
*) h
;
9601 && (eh
->elf
.plt
.plist
!= NULL
9603 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
9609 if (sym_sec
== NULL
)
9610 /* Ignore other undefined symbols. */
9613 /* Assume branches to other sections not included in the link need
9614 stubs too, to cover -R and absolute syms. */
9615 if (sym_sec
->output_section
== NULL
)
9622 sym_value
= sym
->st_value
;
9625 if (h
->root
.type
!= bfd_link_hash_defined
9626 && h
->root
.type
!= bfd_link_hash_defweak
)
9628 sym_value
= h
->root
.u
.def
.value
;
9630 sym_value
+= rel
->r_addend
;
9632 /* If this branch reloc uses an opd sym, find the code section. */
9633 opd
= get_opd_info (sym_sec
);
9636 if (h
== NULL
&& opd
->adjust
!= NULL
)
9640 adjust
= opd
->adjust
[sym
->st_value
/ 8];
9642 /* Assume deleted functions won't ever be called. */
9644 sym_value
+= adjust
;
9647 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
9648 if (dest
== (bfd_vma
) -1)
9653 + sym_sec
->output_offset
9654 + sym_sec
->output_section
->vma
);
9656 /* Ignore branch to self. */
9657 if (sym_sec
== isec
)
9660 /* If the called function uses the toc, we need a stub. */
9661 if (sym_sec
->has_toc_reloc
9662 || sym_sec
->makes_toc_func_call
)
9668 /* Assume any branch that needs a long branch stub might in fact
9669 need a plt_branch stub. A plt_branch stub uses r2. */
9670 else if (dest
- (isec
->output_offset
9671 + isec
->output_section
->vma
9672 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
9678 /* If calling back to a section in the process of being tested, we
9679 can't say for sure that no toc adjusting stubs are needed, so
9680 don't return zero. */
9681 else if (sym_sec
->call_check_in_progress
)
9684 /* Branches to another section that itself doesn't have any TOC
9685 references are OK. Recursively call ourselves to check. */
9686 else if (sym_sec
->id
<= htab
->top_id
9687 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
9691 /* Mark current section as indeterminate, so that other
9692 sections that call back to current won't be marked as
9694 isec
->call_check_in_progress
= 1;
9695 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
9696 isec
->call_check_in_progress
= 0;
9700 /* An error. Exit. */
9704 else if (recur
<= 1)
9706 /* Known result. Mark as checked and set section flag. */
9707 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
9710 sym_sec
->makes_toc_func_call
= 1;
9717 /* Unknown result. Continue checking. */
9723 if (local_syms
!= NULL
9724 && (elf_symtab_hdr (isec
->owner
).contents
!= (unsigned char *) local_syms
))
9726 if (elf_section_data (isec
)->relocs
!= relstart
)
9732 /* The linker repeatedly calls this function for each input section,
9733 in the order that input sections are linked into output sections.
9734 Build lists of input sections to determine groupings between which
9735 we may insert linker stubs. */
9738 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
9740 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9742 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
9743 && isec
->output_section
->index
<= htab
->top_index
)
9745 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
9746 /* Steal the link_sec pointer for our list. */
9747 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
9748 /* This happens to make the list in reverse order,
9749 which is what we want. */
9750 PREV_SEC (isec
) = *list
;
9754 if (htab
->multi_toc_needed
)
9756 /* If a code section has a function that uses the TOC then we need
9757 to use the right TOC (obviously). Also, make sure that .opd gets
9758 the correct TOC value for R_PPC64_TOC relocs that don't have or
9759 can't find their function symbol (shouldn't ever happen now).
9760 Also specially treat .fixup for the linux kernel. .fixup
9761 contains branches, but only back to the function that hit an
9763 if (isec
->has_toc_reloc
9764 || (isec
->flags
& SEC_CODE
) == 0
9765 || strcmp (isec
->name
, ".fixup") == 0)
9767 if (elf_gp (isec
->owner
) != 0)
9768 htab
->toc_curr
= elf_gp (isec
->owner
);
9770 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
9772 int ret
= toc_adjusting_stub_needed (info
, isec
);
9776 isec
->makes_toc_func_call
= ret
& 1;
9780 /* Functions that don't use the TOC can belong in any TOC group.
9781 Use the last TOC base. This happens to make _init and _fini
9783 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
9787 /* See whether we can group stub sections together. Grouping stub
9788 sections may result in fewer stubs. More importantly, we need to
9789 put all .init* and .fini* stubs at the beginning of the .init or
9790 .fini output sections respectively, because glibc splits the
9791 _init and _fini functions into multiple parts. Putting a stub in
9792 the middle of a function is not a good idea. */
9795 group_sections (struct ppc_link_hash_table
*htab
,
9796 bfd_size_type stub_group_size
,
9797 bfd_boolean stubs_always_before_branch
)
9800 bfd_size_type stub14_group_size
;
9801 bfd_boolean suppress_size_errors
;
9803 suppress_size_errors
= FALSE
;
9804 stub14_group_size
= stub_group_size
;
9805 if (stub_group_size
== 1)
9807 /* Default values. */
9808 if (stubs_always_before_branch
)
9810 stub_group_size
= 0x1e00000;
9811 stub14_group_size
= 0x7800;
9815 stub_group_size
= 0x1c00000;
9816 stub14_group_size
= 0x7000;
9818 suppress_size_errors
= TRUE
;
9821 list
= htab
->input_list
+ htab
->top_index
;
9824 asection
*tail
= *list
;
9825 while (tail
!= NULL
)
9829 bfd_size_type total
;
9830 bfd_boolean big_sec
;
9835 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
9836 ? stub14_group_size
: stub_group_size
);
9837 if (big_sec
&& !suppress_size_errors
)
9838 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
9840 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
9842 while ((prev
= PREV_SEC (curr
)) != NULL
9843 && ((total
+= curr
->output_offset
- prev
->output_offset
)
9844 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9845 ? stub14_group_size
: stub_group_size
))
9846 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9849 /* OK, the size from the start of CURR to the end is less
9850 than stub_group_size and thus can be handled by one stub
9851 section. (or the tail section is itself larger than
9852 stub_group_size, in which case we may be toast.) We
9853 should really be keeping track of the total size of stubs
9854 added here, as stubs contribute to the final output
9855 section size. That's a little tricky, and this way will
9856 only break if stubs added make the total size more than
9857 2^25, ie. for the default stub_group_size, if stubs total
9858 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9861 prev
= PREV_SEC (tail
);
9862 /* Set up this stub group. */
9863 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9865 while (tail
!= curr
&& (tail
= prev
) != NULL
);
9867 /* But wait, there's more! Input sections up to stub_group_size
9868 bytes before the stub section can be handled by it too.
9869 Don't do this if we have a really large section after the
9870 stubs, as adding more stubs increases the chance that
9871 branches may not reach into the stub section. */
9872 if (!stubs_always_before_branch
&& !big_sec
)
9876 && ((total
+= tail
->output_offset
- prev
->output_offset
)
9877 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9878 ? stub14_group_size
: stub_group_size
))
9879 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9882 prev
= PREV_SEC (tail
);
9883 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9889 while (list
-- != htab
->input_list
);
9890 free (htab
->input_list
);
9894 /* Determine and set the size of the stub section for a final link.
9896 The basic idea here is to examine all the relocations looking for
9897 PC-relative calls to a target that is unreachable with a "bl"
9901 ppc64_elf_size_stubs (bfd
*output_bfd
,
9902 struct bfd_link_info
*info
,
9903 bfd_signed_vma group_size
,
9904 asection
*(*add_stub_section
) (const char *, asection
*),
9905 void (*layout_sections_again
) (void))
9907 bfd_size_type stub_group_size
;
9908 bfd_boolean stubs_always_before_branch
;
9909 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9911 /* Stash our params away. */
9912 htab
->add_stub_section
= add_stub_section
;
9913 htab
->layout_sections_again
= layout_sections_again
;
9914 stubs_always_before_branch
= group_size
< 0;
9916 stub_group_size
= -group_size
;
9918 stub_group_size
= group_size
;
9920 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
9925 unsigned int bfd_indx
;
9928 htab
->stub_iteration
+= 1;
9930 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
9932 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
9934 Elf_Internal_Shdr
*symtab_hdr
;
9936 Elf_Internal_Sym
*local_syms
= NULL
;
9938 if (!is_ppc64_elf (input_bfd
))
9941 /* We'll need the symbol table in a second. */
9942 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
9943 if (symtab_hdr
->sh_info
== 0)
9946 /* Walk over each section attached to the input bfd. */
9947 for (section
= input_bfd
->sections
;
9949 section
= section
->next
)
9951 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
9953 /* If there aren't any relocs, then there's nothing more
9955 if ((section
->flags
& SEC_RELOC
) == 0
9956 || (section
->flags
& SEC_ALLOC
) == 0
9957 || (section
->flags
& SEC_LOAD
) == 0
9958 || (section
->flags
& SEC_CODE
) == 0
9959 || section
->reloc_count
== 0)
9962 /* If this section is a link-once section that will be
9963 discarded, then don't create any stubs. */
9964 if (section
->output_section
== NULL
9965 || section
->output_section
->owner
!= output_bfd
)
9968 /* Get the relocs. */
9970 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
9972 if (internal_relocs
== NULL
)
9973 goto error_ret_free_local
;
9975 /* Now examine each relocation. */
9976 irela
= internal_relocs
;
9977 irelaend
= irela
+ section
->reloc_count
;
9978 for (; irela
< irelaend
; irela
++)
9980 enum elf_ppc64_reloc_type r_type
;
9981 unsigned int r_indx
;
9982 enum ppc_stub_type stub_type
;
9983 struct ppc_stub_hash_entry
*stub_entry
;
9984 asection
*sym_sec
, *code_sec
;
9985 bfd_vma sym_value
, code_value
;
9986 bfd_vma destination
;
9987 bfd_boolean ok_dest
;
9988 struct ppc_link_hash_entry
*hash
;
9989 struct ppc_link_hash_entry
*fdh
;
9990 struct elf_link_hash_entry
*h
;
9991 Elf_Internal_Sym
*sym
;
9993 const asection
*id_sec
;
9994 struct _opd_sec_data
*opd
;
9995 struct plt_entry
*plt_ent
;
9997 r_type
= ELF64_R_TYPE (irela
->r_info
);
9998 r_indx
= ELF64_R_SYM (irela
->r_info
);
10000 if (r_type
>= R_PPC64_max
)
10002 bfd_set_error (bfd_error_bad_value
);
10003 goto error_ret_free_internal
;
10006 /* Only look for stubs on branch instructions. */
10007 if (r_type
!= R_PPC64_REL24
10008 && r_type
!= R_PPC64_REL14
10009 && r_type
!= R_PPC64_REL14_BRTAKEN
10010 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10013 /* Now determine the call target, its name, value,
10015 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
10016 r_indx
, input_bfd
))
10017 goto error_ret_free_internal
;
10018 hash
= (struct ppc_link_hash_entry
*) h
;
10025 sym_value
= sym
->st_value
;
10028 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
10029 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
10031 sym_value
= hash
->elf
.root
.u
.def
.value
;
10032 if (sym_sec
->output_section
!= NULL
)
10035 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
10036 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
10038 /* Recognise an old ABI func code entry sym, and
10039 use the func descriptor sym instead if it is
10041 if (hash
->elf
.root
.root
.string
[0] == '.'
10042 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
10044 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
10045 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
10047 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
10048 sym_value
= fdh
->elf
.root
.u
.def
.value
;
10049 if (sym_sec
->output_section
!= NULL
)
10058 bfd_set_error (bfd_error_bad_value
);
10059 goto error_ret_free_internal
;
10065 sym_value
+= irela
->r_addend
;
10066 destination
= (sym_value
10067 + sym_sec
->output_offset
10068 + sym_sec
->output_section
->vma
);
10071 code_sec
= sym_sec
;
10072 code_value
= sym_value
;
10073 opd
= get_opd_info (sym_sec
);
10078 if (hash
== NULL
&& opd
->adjust
!= NULL
)
10080 long adjust
= opd
->adjust
[sym_value
/ 8];
10083 code_value
+= adjust
;
10084 sym_value
+= adjust
;
10086 dest
= opd_entry_value (sym_sec
, sym_value
,
10087 &code_sec
, &code_value
);
10088 if (dest
!= (bfd_vma
) -1)
10090 destination
= dest
;
10093 /* Fixup old ABI sym to point at code
10095 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
10096 hash
->elf
.root
.u
.def
.section
= code_sec
;
10097 hash
->elf
.root
.u
.def
.value
= code_value
;
10102 /* Determine what (if any) linker stub is needed. */
10104 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
10105 &plt_ent
, destination
);
10107 if (stub_type
!= ppc_stub_plt_call
)
10109 /* Check whether we need a TOC adjusting stub.
10110 Since the linker pastes together pieces from
10111 different object files when creating the
10112 _init and _fini functions, it may be that a
10113 call to what looks like a local sym is in
10114 fact a call needing a TOC adjustment. */
10115 if (code_sec
!= NULL
10116 && code_sec
->output_section
!= NULL
10117 && (htab
->stub_group
[code_sec
->id
].toc_off
10118 != htab
->stub_group
[section
->id
].toc_off
)
10119 && (code_sec
->has_toc_reloc
10120 || code_sec
->makes_toc_func_call
))
10121 stub_type
= ppc_stub_long_branch_r2off
;
10124 if (stub_type
== ppc_stub_none
)
10127 /* __tls_get_addr calls might be eliminated. */
10128 if (stub_type
!= ppc_stub_plt_call
10130 && (hash
== htab
->tls_get_addr
10131 || hash
== htab
->tls_get_addr_fd
)
10132 && section
->has_tls_reloc
10133 && irela
!= internal_relocs
)
10135 /* Get tls info. */
10138 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
10139 irela
- 1, input_bfd
))
10140 goto error_ret_free_internal
;
10141 if (*tls_mask
!= 0)
10145 /* Support for grouping stub sections. */
10146 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
10148 /* Get the name of this stub. */
10149 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
10151 goto error_ret_free_internal
;
10153 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
10154 stub_name
, FALSE
, FALSE
);
10155 if (stub_entry
!= NULL
)
10157 /* The proper stub has already been created. */
10162 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
10163 if (stub_entry
== NULL
)
10166 error_ret_free_internal
:
10167 if (elf_section_data (section
)->relocs
== NULL
)
10168 free (internal_relocs
);
10169 error_ret_free_local
:
10170 if (local_syms
!= NULL
10171 && (symtab_hdr
->contents
10172 != (unsigned char *) local_syms
))
10177 stub_entry
->stub_type
= stub_type
;
10178 if (stub_type
!= ppc_stub_plt_call
)
10180 stub_entry
->target_value
= code_value
;
10181 stub_entry
->target_section
= code_sec
;
10185 stub_entry
->target_value
= sym_value
;
10186 stub_entry
->target_section
= sym_sec
;
10188 stub_entry
->h
= hash
;
10189 stub_entry
->plt_ent
= plt_ent
;
10190 stub_entry
->addend
= irela
->r_addend
;
10192 if (stub_entry
->h
!= NULL
)
10193 htab
->stub_globals
+= 1;
10196 /* We're done with the internal relocs, free them. */
10197 if (elf_section_data (section
)->relocs
!= internal_relocs
)
10198 free (internal_relocs
);
10201 if (local_syms
!= NULL
10202 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
10204 if (!info
->keep_memory
)
10207 symtab_hdr
->contents
= (unsigned char *) local_syms
;
10211 /* We may have added some stubs. Find out the new size of the
10213 for (stub_sec
= htab
->stub_bfd
->sections
;
10215 stub_sec
= stub_sec
->next
)
10216 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
10218 stub_sec
->rawsize
= stub_sec
->size
;
10219 stub_sec
->size
= 0;
10220 stub_sec
->reloc_count
= 0;
10221 stub_sec
->flags
&= ~SEC_RELOC
;
10224 htab
->brlt
->size
= 0;
10225 htab
->brlt
->reloc_count
= 0;
10226 htab
->brlt
->flags
&= ~SEC_RELOC
;
10227 if (htab
->relbrlt
!= NULL
)
10228 htab
->relbrlt
->size
= 0;
10230 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
10232 if (info
->emitrelocations
10233 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
10235 htab
->glink
->reloc_count
= 1;
10236 htab
->glink
->flags
|= SEC_RELOC
;
10239 for (stub_sec
= htab
->stub_bfd
->sections
;
10241 stub_sec
= stub_sec
->next
)
10242 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
10243 && stub_sec
->rawsize
!= stub_sec
->size
)
10246 /* Exit from this loop when no stubs have been added, and no stubs
10247 have changed size. */
10248 if (stub_sec
== NULL
)
10251 /* Ask the linker to do its stuff. */
10252 (*htab
->layout_sections_again
) ();
10255 /* It would be nice to strip htab->brlt from the output if the
10256 section is empty, but it's too late. If we strip sections here,
10257 the dynamic symbol table is corrupted since the section symbol
10258 for the stripped section isn't written. */
10263 /* Called after we have determined section placement. If sections
10264 move, we'll be called again. Provide a value for TOCstart. */
10267 ppc64_elf_toc (bfd
*obfd
)
10272 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10273 order. The TOC starts where the first of these sections starts. */
10274 s
= bfd_get_section_by_name (obfd
, ".got");
10275 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10276 s
= bfd_get_section_by_name (obfd
, ".toc");
10277 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10278 s
= bfd_get_section_by_name (obfd
, ".tocbss");
10279 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10280 s
= bfd_get_section_by_name (obfd
, ".plt");
10281 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10283 /* This may happen for
10284 o references to TOC base (SYM@toc / TOC[tc0]) without a
10286 o bad linker script
10287 o --gc-sections and empty TOC sections
10289 FIXME: Warn user? */
10291 /* Look for a likely section. We probably won't even be
10293 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10294 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
10296 == (SEC_ALLOC
| SEC_SMALL_DATA
))
10299 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10300 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
10301 == (SEC_ALLOC
| SEC_SMALL_DATA
))
10304 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10305 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
10309 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10310 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
10316 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
10321 /* Build all the stubs associated with the current output file.
10322 The stubs are kept in a hash table attached to the main linker
10323 hash table. This function is called via gldelf64ppc_finish. */
10326 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
10327 struct bfd_link_info
*info
,
10330 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10331 asection
*stub_sec
;
10333 int stub_sec_count
= 0;
10335 htab
->emit_stub_syms
= emit_stub_syms
;
10337 /* Allocate memory to hold the linker stubs. */
10338 for (stub_sec
= htab
->stub_bfd
->sections
;
10340 stub_sec
= stub_sec
->next
)
10341 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
10342 && stub_sec
->size
!= 0)
10344 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
10345 if (stub_sec
->contents
== NULL
)
10347 /* We want to check that built size is the same as calculated
10348 size. rawsize is a convenient location to use. */
10349 stub_sec
->rawsize
= stub_sec
->size
;
10350 stub_sec
->size
= 0;
10353 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
10358 /* Build the .glink plt call stub. */
10359 if (htab
->emit_stub_syms
)
10361 struct elf_link_hash_entry
*h
;
10362 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
10363 TRUE
, FALSE
, FALSE
);
10366 if (h
->root
.type
== bfd_link_hash_new
)
10368 h
->root
.type
= bfd_link_hash_defined
;
10369 h
->root
.u
.def
.section
= htab
->glink
;
10370 h
->root
.u
.def
.value
= 8;
10371 h
->ref_regular
= 1;
10372 h
->def_regular
= 1;
10373 h
->ref_regular_nonweak
= 1;
10374 h
->forced_local
= 1;
10378 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
10379 if (info
->emitrelocations
)
10381 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
10384 r
->r_offset
= (htab
->glink
->output_offset
10385 + htab
->glink
->output_section
->vma
);
10386 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
10387 r
->r_addend
= plt0
;
10389 p
= htab
->glink
->contents
;
10390 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
10391 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
10393 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
10395 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
10397 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
10399 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
10401 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
10403 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
10405 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
10407 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
10409 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
10411 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
10413 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
10415 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
10417 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
10421 /* Build the .glink lazy link call stubs. */
10423 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
10427 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
10432 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
10434 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
10437 bfd_put_32 (htab
->glink
->owner
,
10438 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
10442 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
10445 if (htab
->brlt
->size
!= 0)
10447 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
10449 if (htab
->brlt
->contents
== NULL
)
10452 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
10454 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
10455 htab
->relbrlt
->size
);
10456 if (htab
->relbrlt
->contents
== NULL
)
10460 /* Build the stubs as directed by the stub hash table. */
10461 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
10463 if (htab
->relbrlt
!= NULL
)
10464 htab
->relbrlt
->reloc_count
= 0;
10466 for (stub_sec
= htab
->stub_bfd
->sections
;
10468 stub_sec
= stub_sec
->next
)
10469 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
10471 stub_sec_count
+= 1;
10472 if (stub_sec
->rawsize
!= stub_sec
->size
)
10476 if (stub_sec
!= NULL
10477 || htab
->glink
->rawsize
!= htab
->glink
->size
)
10479 htab
->stub_error
= TRUE
;
10480 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
10483 if (htab
->stub_error
)
10488 *stats
= bfd_malloc (500);
10489 if (*stats
== NULL
)
10492 sprintf (*stats
, _("linker stubs in %u group%s\n"
10494 " toc adjust %lu\n"
10495 " long branch %lu\n"
10496 " long toc adj %lu\n"
10499 stub_sec_count
== 1 ? "" : "s",
10500 htab
->stub_count
[ppc_stub_long_branch
- 1],
10501 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
10502 htab
->stub_count
[ppc_stub_plt_branch
- 1],
10503 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
10504 htab
->stub_count
[ppc_stub_plt_call
- 1]);
10509 /* This function undoes the changes made by add_symbol_adjust. */
10512 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10514 struct ppc_link_hash_entry
*eh
;
10516 if (h
->root
.type
== bfd_link_hash_indirect
)
10519 if (h
->root
.type
== bfd_link_hash_warning
)
10520 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10522 eh
= (struct ppc_link_hash_entry
*) h
;
10523 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
10526 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
10531 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
10533 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10534 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
10537 /* What to do when ld finds relocations against symbols defined in
10538 discarded sections. */
10540 static unsigned int
10541 ppc64_elf_action_discarded (asection
*sec
)
10543 if (strcmp (".opd", sec
->name
) == 0)
10546 if (strcmp (".toc", sec
->name
) == 0)
10549 if (strcmp (".toc1", sec
->name
) == 0)
10552 return _bfd_elf_default_action_discarded (sec
);
10555 /* The RELOCATE_SECTION function is called by the ELF backend linker
10556 to handle the relocations for a section.
10558 The relocs are always passed as Rela structures; if the section
10559 actually uses Rel structures, the r_addend field will always be
10562 This function is responsible for adjust the section contents as
10563 necessary, and (if using Rela relocs and generating a
10564 relocatable output file) adjusting the reloc addend as
10567 This function does not have to worry about setting the reloc
10568 address or the reloc symbol index.
10570 LOCAL_SYMS is a pointer to the swapped in local symbols.
10572 LOCAL_SECTIONS is an array giving the section in the input file
10573 corresponding to the st_shndx field of each local symbol.
10575 The global hash table entry for the global symbols can be found
10576 via elf_sym_hashes (input_bfd).
10578 When generating relocatable output, this function must handle
10579 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10580 going to be the section symbol corresponding to the output
10581 section, which means that the addend must be adjusted
10585 ppc64_elf_relocate_section (bfd
*output_bfd
,
10586 struct bfd_link_info
*info
,
10588 asection
*input_section
,
10589 bfd_byte
*contents
,
10590 Elf_Internal_Rela
*relocs
,
10591 Elf_Internal_Sym
*local_syms
,
10592 asection
**local_sections
)
10594 struct ppc_link_hash_table
*htab
;
10595 Elf_Internal_Shdr
*symtab_hdr
;
10596 struct elf_link_hash_entry
**sym_hashes
;
10597 Elf_Internal_Rela
*rel
;
10598 Elf_Internal_Rela
*relend
;
10599 Elf_Internal_Rela outrel
;
10601 struct got_entry
**local_got_ents
;
10603 bfd_boolean ret
= TRUE
;
10604 bfd_boolean is_opd
;
10605 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
10606 bfd_boolean is_power4
= FALSE
;
10607 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
10609 /* Initialize howto table if needed. */
10610 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
10613 htab
= ppc_hash_table (info
);
10615 /* Don't relocate stub sections. */
10616 if (input_section
->owner
== htab
->stub_bfd
)
10619 BFD_ASSERT (is_ppc64_elf (input_bfd
));
10621 local_got_ents
= elf_local_got_ents (input_bfd
);
10622 TOCstart
= elf_gp (output_bfd
);
10623 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10624 sym_hashes
= elf_sym_hashes (input_bfd
);
10625 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
10628 relend
= relocs
+ input_section
->reloc_count
;
10629 for (; rel
< relend
; rel
++)
10631 enum elf_ppc64_reloc_type r_type
;
10632 bfd_vma addend
, orig_addend
;
10633 bfd_reloc_status_type r
;
10634 Elf_Internal_Sym
*sym
;
10636 struct elf_link_hash_entry
*h_elf
;
10637 struct ppc_link_hash_entry
*h
;
10638 struct ppc_link_hash_entry
*fdh
;
10639 const char *sym_name
;
10640 unsigned long r_symndx
, toc_symndx
;
10641 bfd_vma toc_addend
;
10642 char tls_mask
, tls_gd
, tls_type
;
10644 bfd_vma relocation
;
10645 bfd_boolean unresolved_reloc
;
10646 bfd_boolean warned
;
10647 unsigned long insn
, mask
;
10648 struct ppc_stub_hash_entry
*stub_entry
;
10649 bfd_vma max_br_offset
;
10652 r_type
= ELF64_R_TYPE (rel
->r_info
);
10653 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10655 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10656 symbol of the previous ADDR64 reloc. The symbol gives us the
10657 proper TOC base to use. */
10658 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
10660 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
10662 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
10668 unresolved_reloc
= FALSE
;
10670 orig_addend
= rel
->r_addend
;
10672 if (r_symndx
< symtab_hdr
->sh_info
)
10674 /* It's a local symbol. */
10675 struct _opd_sec_data
*opd
;
10677 sym
= local_syms
+ r_symndx
;
10678 sec
= local_sections
[r_symndx
];
10679 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
10680 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
10681 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
10682 opd
= get_opd_info (sec
);
10683 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
10685 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
10690 /* If this is a relocation against the opd section sym
10691 and we have edited .opd, adjust the reloc addend so
10692 that ld -r and ld --emit-relocs output is correct.
10693 If it is a reloc against some other .opd symbol,
10694 then the symbol value will be adjusted later. */
10695 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
10696 rel
->r_addend
+= adjust
;
10698 relocation
+= adjust
;
10704 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
10705 r_symndx
, symtab_hdr
, sym_hashes
,
10706 h_elf
, sec
, relocation
,
10707 unresolved_reloc
, warned
);
10708 sym_name
= h_elf
->root
.root
.string
;
10709 sym_type
= h_elf
->type
;
10711 h
= (struct ppc_link_hash_entry
*) h_elf
;
10713 if (sec
!= NULL
&& elf_discarded_section (sec
))
10715 /* For relocs against symbols from removed linkonce sections,
10716 or sections discarded by a linker script, we just want the
10717 section contents zeroed. Avoid any special processing. */
10718 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
10719 contents
+ rel
->r_offset
);
10725 if (info
->relocatable
)
10728 /* TLS optimizations. Replace instruction sequences and relocs
10729 based on information we collected in tls_optimize. We edit
10730 RELOCS so that --emit-relocs will output something sensible
10731 for the final instruction stream. */
10736 tls_mask
= h
->tls_mask
;
10737 else if (local_got_ents
!= NULL
)
10739 struct plt_entry
**local_plt
= (struct plt_entry
**)
10740 (local_got_ents
+ symtab_hdr
->sh_info
);
10741 char *lgot_masks
= (char *)
10742 (local_plt
+ symtab_hdr
->sh_info
);
10743 tls_mask
= lgot_masks
[r_symndx
];
10746 && (r_type
== R_PPC64_TLS
10747 || r_type
== R_PPC64_TLSGD
10748 || r_type
== R_PPC64_TLSLD
))
10750 /* Check for toc tls entries. */
10753 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
10754 &local_syms
, rel
, input_bfd
))
10758 tls_mask
= *toc_tls
;
10761 /* Check that tls relocs are used with tls syms, and non-tls
10762 relocs are used with non-tls syms. */
10764 && r_type
!= R_PPC64_NONE
10766 || h
->elf
.root
.type
== bfd_link_hash_defined
10767 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
10768 && (IS_PPC64_TLS_RELOC (r_type
)
10769 != (sym_type
== STT_TLS
10770 || (sym_type
== STT_SECTION
10771 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
10774 && (r_type
== R_PPC64_TLS
10775 || r_type
== R_PPC64_TLSGD
10776 || r_type
== R_PPC64_TLSLD
))
10777 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10780 (*_bfd_error_handler
)
10781 (!IS_PPC64_TLS_RELOC (r_type
)
10782 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10783 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10786 (long) rel
->r_offset
,
10787 ppc64_elf_howto_table
[r_type
]->name
,
10791 /* Ensure reloc mapping code below stays sane. */
10792 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
10793 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
10794 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
10795 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
10796 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
10797 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
10798 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
10799 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
10800 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
10801 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
10809 case R_PPC64_TOC16
:
10810 case R_PPC64_TOC16_LO
:
10811 case R_PPC64_TOC16_DS
:
10812 case R_PPC64_TOC16_LO_DS
:
10814 /* Check for toc tls entries. */
10818 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
10819 &local_syms
, rel
, input_bfd
);
10825 tls_mask
= *toc_tls
;
10826 if (r_type
== R_PPC64_TOC16_DS
10827 || r_type
== R_PPC64_TOC16_LO_DS
)
10830 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
10835 /* If we found a GD reloc pair, then we might be
10836 doing a GD->IE transition. */
10839 tls_gd
= TLS_TPRELGD
;
10840 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10843 else if (retval
== 3)
10845 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10853 case R_PPC64_GOT_TPREL16_DS
:
10854 case R_PPC64_GOT_TPREL16_LO_DS
:
10856 && (tls_mask
& TLS_TPREL
) == 0)
10859 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
10861 insn
|= 0x3c0d0000; /* addis 0,13,0 */
10862 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
10863 r_type
= R_PPC64_TPREL16_HA
;
10864 if (toc_symndx
!= 0)
10866 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10867 rel
->r_addend
= toc_addend
;
10868 /* We changed the symbol. Start over in order to
10869 get h, sym, sec etc. right. */
10874 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10880 && (tls_mask
& TLS_TPREL
) == 0)
10883 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
10884 if ((insn
& ((0x3f << 26) | (31 << 11)))
10885 == ((31 << 26) | (13 << 11)))
10886 rtra
= insn
& ((1 << 26) - (1 << 16));
10887 else if ((insn
& ((0x3f << 26) | (31 << 16)))
10888 == ((31 << 26) | (13 << 16)))
10889 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
10892 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
10895 else if ((insn
& (31 << 1)) == 23 << 1
10896 && ((insn
& (31 << 6)) < 14 << 6
10897 || ((insn
& (31 << 6)) >= 16 << 6
10898 && (insn
& (31 << 6)) < 24 << 6)))
10899 /* load and store indexed -> dform. */
10900 insn
= (32 | ((insn
>> 6) & 31)) << 26;
10901 else if ((insn
& (31 << 1)) == 21 << 1
10902 && (insn
& (0x1a << 6)) == 0)
10903 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10904 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
10905 | ((insn
>> 6) & 1));
10906 else if ((insn
& (31 << 1)) == 21 << 1
10907 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
10909 insn
= (58 << 26) | 2;
10913 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10914 /* Was PPC64_TLS which sits on insn boundary, now
10915 PPC64_TPREL16_LO which is at low-order half-word. */
10916 rel
->r_offset
+= d_offset
;
10917 r_type
= R_PPC64_TPREL16_LO
;
10918 if (toc_symndx
!= 0)
10920 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10921 rel
->r_addend
= toc_addend
;
10922 /* We changed the symbol. Start over in order to
10923 get h, sym, sec etc. right. */
10928 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10932 case R_PPC64_GOT_TLSGD16_HI
:
10933 case R_PPC64_GOT_TLSGD16_HA
:
10934 tls_gd
= TLS_TPRELGD
;
10935 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10939 case R_PPC64_GOT_TLSLD16_HI
:
10940 case R_PPC64_GOT_TLSLD16_HA
:
10941 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10944 if ((tls_mask
& tls_gd
) != 0)
10945 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10946 + R_PPC64_GOT_TPREL16_DS
);
10949 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10950 rel
->r_offset
-= d_offset
;
10951 r_type
= R_PPC64_NONE
;
10953 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10957 case R_PPC64_GOT_TLSGD16
:
10958 case R_PPC64_GOT_TLSGD16_LO
:
10959 tls_gd
= TLS_TPRELGD
;
10960 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10964 case R_PPC64_GOT_TLSLD16
:
10965 case R_PPC64_GOT_TLSLD16_LO
:
10966 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10968 unsigned int insn1
, insn2
, insn3
;
10972 offset
= (bfd_vma
) -1;
10973 /* If not using the newer R_PPC64_TLSGD/LD to mark
10974 __tls_get_addr calls, we must trust that the call
10975 stays with its arg setup insns, ie. that the next
10976 reloc is the __tls_get_addr call associated with
10977 the current reloc. Edit both insns. */
10978 if (input_section
->has_tls_get_addr_call
10979 && rel
+ 1 < relend
10980 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
10981 htab
->tls_get_addr
,
10982 htab
->tls_get_addr_fd
))
10983 offset
= rel
[1].r_offset
;
10984 if ((tls_mask
& tls_gd
) != 0)
10987 insn1
= bfd_get_32 (output_bfd
,
10988 contents
+ rel
->r_offset
- d_offset
);
10989 insn1
&= (1 << 26) - (1 << 2);
10990 insn1
|= 58 << 26; /* ld */
10991 insn2
= 0x7c636a14; /* add 3,3,13 */
10992 if (offset
!= (bfd_vma
) -1)
10993 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10995 if ((tls_mask
& TLS_EXPLICIT
) == 0)
10996 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10997 + R_PPC64_GOT_TPREL16_DS
);
10999 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
11000 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11005 insn1
= 0x3c6d0000; /* addis 3,13,0 */
11006 insn2
= 0x38630000; /* addi 3,3,0 */
11009 /* Was an LD reloc. */
11011 sec
= local_sections
[toc_symndx
];
11013 r_symndx
< symtab_hdr
->sh_info
;
11015 if (local_sections
[r_symndx
] == sec
)
11017 if (r_symndx
>= symtab_hdr
->sh_info
)
11019 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11021 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11022 + sec
->output_offset
11023 + sec
->output_section
->vma
);
11025 else if (toc_symndx
!= 0)
11027 r_symndx
= toc_symndx
;
11028 rel
->r_addend
= toc_addend
;
11030 r_type
= R_PPC64_TPREL16_HA
;
11031 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11032 if (offset
!= (bfd_vma
) -1)
11034 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
11035 R_PPC64_TPREL16_LO
);
11036 rel
[1].r_offset
= offset
+ d_offset
;
11037 rel
[1].r_addend
= rel
->r_addend
;
11040 bfd_put_32 (output_bfd
, insn1
,
11041 contents
+ rel
->r_offset
- d_offset
);
11042 if (offset
!= (bfd_vma
) -1)
11044 insn3
= bfd_get_32 (output_bfd
,
11045 contents
+ offset
+ 4);
11047 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11049 rel
[1].r_offset
+= 4;
11050 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11053 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11055 if ((tls_mask
& tls_gd
) == 0
11056 && (tls_gd
== 0 || toc_symndx
!= 0))
11058 /* We changed the symbol. Start over in order
11059 to get h, sym, sec etc. right. */
11066 case R_PPC64_TLSGD
:
11067 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11069 unsigned int insn2
, insn3
;
11070 bfd_vma offset
= rel
->r_offset
;
11072 if ((tls_mask
& TLS_TPRELGD
) != 0)
11075 r_type
= R_PPC64_NONE
;
11076 insn2
= 0x7c636a14; /* add 3,3,13 */
11081 if (toc_symndx
!= 0)
11083 r_symndx
= toc_symndx
;
11084 rel
->r_addend
= toc_addend
;
11086 r_type
= R_PPC64_TPREL16_LO
;
11087 rel
->r_offset
= offset
+ d_offset
;
11088 insn2
= 0x38630000; /* addi 3,3,0 */
11090 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11091 /* Zap the reloc on the _tls_get_addr call too. */
11092 BFD_ASSERT (offset
== rel
[1].r_offset
);
11093 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
11095 insn3
= bfd_get_32 (output_bfd
,
11096 contents
+ offset
+ 4);
11098 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11100 rel
->r_offset
+= 4;
11101 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11104 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11105 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
11113 case R_PPC64_TLSLD
:
11114 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11116 unsigned int insn2
, insn3
;
11117 bfd_vma offset
= rel
->r_offset
;
11120 sec
= local_sections
[toc_symndx
];
11122 r_symndx
< symtab_hdr
->sh_info
;
11124 if (local_sections
[r_symndx
] == sec
)
11126 if (r_symndx
>= symtab_hdr
->sh_info
)
11128 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11130 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11131 + sec
->output_offset
11132 + sec
->output_section
->vma
);
11134 r_type
= R_PPC64_TPREL16_LO
;
11135 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11136 rel
->r_offset
= offset
+ d_offset
;
11137 /* Zap the reloc on the _tls_get_addr call too. */
11138 BFD_ASSERT (offset
== rel
[1].r_offset
);
11139 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
11141 insn2
= 0x38630000; /* addi 3,3,0 */
11142 insn3
= bfd_get_32 (output_bfd
,
11143 contents
+ offset
+ 4);
11145 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11147 rel
->r_offset
+= 4;
11148 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11151 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11157 case R_PPC64_DTPMOD64
:
11158 if (rel
+ 1 < relend
11159 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
11160 && rel
[1].r_offset
== rel
->r_offset
+ 8)
11162 if ((tls_mask
& TLS_GD
) == 0)
11164 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
11165 if ((tls_mask
& TLS_TPRELGD
) != 0)
11166 r_type
= R_PPC64_TPREL64
;
11169 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
11170 r_type
= R_PPC64_NONE
;
11172 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11177 if ((tls_mask
& TLS_LD
) == 0)
11179 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
11180 r_type
= R_PPC64_NONE
;
11181 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11186 case R_PPC64_TPREL64
:
11187 if ((tls_mask
& TLS_TPREL
) == 0)
11189 r_type
= R_PPC64_NONE
;
11190 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11195 /* Handle other relocations that tweak non-addend part of insn. */
11197 max_br_offset
= 1 << 25;
11198 addend
= rel
->r_addend
;
11204 /* Branch taken prediction relocations. */
11205 case R_PPC64_ADDR14_BRTAKEN
:
11206 case R_PPC64_REL14_BRTAKEN
:
11207 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11210 /* Branch not taken prediction relocations. */
11211 case R_PPC64_ADDR14_BRNTAKEN
:
11212 case R_PPC64_REL14_BRNTAKEN
:
11213 insn
|= bfd_get_32 (output_bfd
,
11214 contents
+ rel
->r_offset
) & ~(0x01 << 21);
11217 case R_PPC64_REL14
:
11218 max_br_offset
= 1 << 15;
11221 case R_PPC64_REL24
:
11222 /* Calls to functions with a different TOC, such as calls to
11223 shared objects, need to alter the TOC pointer. This is
11224 done using a linkage stub. A REL24 branching to these
11225 linkage stubs needs to be followed by a nop, as the nop
11226 will be replaced with an instruction to restore the TOC
11232 && h
->oh
->is_func_descriptor
)
11233 fdh
= ppc_follow_link (h
->oh
);
11235 && fdh
->elf
.plt
.plist
!= NULL
)
11237 && sec
->output_section
!= NULL
11238 && sec
->id
<= htab
->top_id
11239 && (htab
->stub_group
[sec
->id
].toc_off
11240 != htab
->stub_group
[input_section
->id
].toc_off
))
11242 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
11243 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
11244 rel
, htab
)) != NULL
11245 && (stub_entry
->stub_type
== ppc_stub_plt_call
11246 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
11247 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
11249 bfd_boolean can_plt_call
= FALSE
;
11251 if (rel
->r_offset
+ 8 <= input_section
->size
)
11254 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
11256 || nop
== CROR_151515
|| nop
== CROR_313131
)
11258 bfd_put_32 (input_bfd
, LD_R2_40R1
,
11259 contents
+ rel
->r_offset
+ 4);
11260 can_plt_call
= TRUE
;
11266 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
11268 /* If this is a plain branch rather than a branch
11269 and link, don't require a nop. However, don't
11270 allow tail calls in a shared library as they
11271 will result in r2 being corrupted. */
11273 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
11274 if (info
->executable
&& (br
& 1) == 0)
11275 can_plt_call
= TRUE
;
11280 && strcmp (h
->elf
.root
.root
.string
,
11281 ".__libc_start_main") == 0)
11283 /* Allow crt1 branch to go via a toc adjusting stub. */
11284 can_plt_call
= TRUE
;
11288 if (strcmp (input_section
->output_section
->name
,
11290 || strcmp (input_section
->output_section
->name
,
11292 (*_bfd_error_handler
)
11293 (_("%B(%A+0x%lx): automatic multiple TOCs "
11294 "not supported using your crt files; "
11295 "recompile with -mminimal-toc or upgrade gcc"),
11298 (long) rel
->r_offset
);
11300 (*_bfd_error_handler
)
11301 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
11302 "does not allow automatic multiple TOCs; "
11303 "recompile with -mminimal-toc or "
11304 "-fno-optimize-sibling-calls, "
11305 "or make `%s' extern"),
11308 (long) rel
->r_offset
,
11311 bfd_set_error (bfd_error_bad_value
);
11317 && stub_entry
->stub_type
== ppc_stub_plt_call
)
11318 unresolved_reloc
= FALSE
;
11321 if (stub_entry
== NULL
11322 && get_opd_info (sec
) != NULL
)
11324 /* The branch destination is the value of the opd entry. */
11325 bfd_vma off
= (relocation
+ addend
11326 - sec
->output_section
->vma
11327 - sec
->output_offset
);
11328 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
11329 if (dest
!= (bfd_vma
) -1)
11336 /* If the branch is out of reach we ought to have a long
11338 from
= (rel
->r_offset
11339 + input_section
->output_offset
11340 + input_section
->output_section
->vma
);
11342 if (stub_entry
== NULL
11343 && (relocation
+ addend
- from
+ max_br_offset
11344 >= 2 * max_br_offset
)
11345 && r_type
!= R_PPC64_ADDR14_BRTAKEN
11346 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
11347 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
11350 if (stub_entry
!= NULL
)
11352 /* Munge up the value and addend so that we call the stub
11353 rather than the procedure directly. */
11354 relocation
= (stub_entry
->stub_offset
11355 + stub_entry
->stub_sec
->output_offset
11356 + stub_entry
->stub_sec
->output_section
->vma
);
11364 /* Set 'a' bit. This is 0b00010 in BO field for branch
11365 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11366 for branch on CTR insns (BO == 1a00t or 1a01t). */
11367 if ((insn
& (0x14 << 21)) == (0x04 << 21))
11368 insn
|= 0x02 << 21;
11369 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
11370 insn
|= 0x08 << 21;
11376 /* Invert 'y' bit if not the default. */
11377 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
11378 insn
^= 0x01 << 21;
11381 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11384 /* NOP out calls to undefined weak functions.
11385 We can thus call a weak function without first
11386 checking whether the function is defined. */
11388 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11389 && r_type
== R_PPC64_REL24
11393 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11399 /* Set `addend'. */
11404 (*_bfd_error_handler
)
11405 (_("%B: unknown relocation type %d for symbol %s"),
11406 input_bfd
, (int) r_type
, sym_name
);
11408 bfd_set_error (bfd_error_bad_value
);
11414 case R_PPC64_TLSGD
:
11415 case R_PPC64_TLSLD
:
11416 case R_PPC64_GNU_VTINHERIT
:
11417 case R_PPC64_GNU_VTENTRY
:
11420 /* GOT16 relocations. Like an ADDR16 using the symbol's
11421 address in the GOT as relocation value instead of the
11422 symbol's value itself. Also, create a GOT entry for the
11423 symbol and put the symbol value there. */
11424 case R_PPC64_GOT_TLSGD16
:
11425 case R_PPC64_GOT_TLSGD16_LO
:
11426 case R_PPC64_GOT_TLSGD16_HI
:
11427 case R_PPC64_GOT_TLSGD16_HA
:
11428 tls_type
= TLS_TLS
| TLS_GD
;
11431 case R_PPC64_GOT_TLSLD16
:
11432 case R_PPC64_GOT_TLSLD16_LO
:
11433 case R_PPC64_GOT_TLSLD16_HI
:
11434 case R_PPC64_GOT_TLSLD16_HA
:
11435 tls_type
= TLS_TLS
| TLS_LD
;
11438 case R_PPC64_GOT_TPREL16_DS
:
11439 case R_PPC64_GOT_TPREL16_LO_DS
:
11440 case R_PPC64_GOT_TPREL16_HI
:
11441 case R_PPC64_GOT_TPREL16_HA
:
11442 tls_type
= TLS_TLS
| TLS_TPREL
;
11445 case R_PPC64_GOT_DTPREL16_DS
:
11446 case R_PPC64_GOT_DTPREL16_LO_DS
:
11447 case R_PPC64_GOT_DTPREL16_HI
:
11448 case R_PPC64_GOT_DTPREL16_HA
:
11449 tls_type
= TLS_TLS
| TLS_DTPREL
;
11452 case R_PPC64_GOT16
:
11453 case R_PPC64_GOT16_LO
:
11454 case R_PPC64_GOT16_HI
:
11455 case R_PPC64_GOT16_HA
:
11456 case R_PPC64_GOT16_DS
:
11457 case R_PPC64_GOT16_LO_DS
:
11460 /* Relocation is to the entry for this symbol in the global
11465 unsigned long indx
= 0;
11467 if (tls_type
== (TLS_TLS
| TLS_LD
)
11469 || !h
->elf
.def_dynamic
))
11470 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
11473 struct got_entry
*ent
;
11477 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
11478 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
11481 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
11482 /* This is actually a static link, or it is a
11483 -Bsymbolic link and the symbol is defined
11484 locally, or the symbol was forced to be local
11485 because of a version file. */
11489 indx
= h
->elf
.dynindx
;
11490 unresolved_reloc
= FALSE
;
11492 ent
= h
->elf
.got
.glist
;
11496 if (local_got_ents
== NULL
)
11498 ent
= local_got_ents
[r_symndx
];
11501 for (; ent
!= NULL
; ent
= ent
->next
)
11502 if (ent
->addend
== orig_addend
11503 && ent
->owner
== input_bfd
11504 && ent
->tls_type
== tls_type
)
11508 offp
= &ent
->got
.offset
;
11511 got
= ppc64_elf_tdata (input_bfd
)->got
;
11515 /* The offset must always be a multiple of 8. We use the
11516 least significant bit to record whether we have already
11517 processed this entry. */
11519 if ((off
& 1) != 0)
11523 /* Generate relocs for the dynamic linker, except in
11524 the case of TLSLD where we'll use one entry per
11532 ? h
->elf
.type
== STT_GNU_IFUNC
11533 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
11534 if ((info
->shared
|| indx
!= 0)
11535 && (offp
== &ppc64_tlsld_got (input_bfd
)->offset
11537 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
11538 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
11539 relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
11541 relgot
= htab
->reliplt
;
11542 if (relgot
!= NULL
)
11544 outrel
.r_offset
= (got
->output_section
->vma
11545 + got
->output_offset
11547 outrel
.r_addend
= addend
;
11548 if (tls_type
& (TLS_LD
| TLS_GD
))
11550 outrel
.r_addend
= 0;
11551 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
11552 if (tls_type
== (TLS_TLS
| TLS_GD
))
11554 loc
= relgot
->contents
;
11555 loc
+= (relgot
->reloc_count
++
11556 * sizeof (Elf64_External_Rela
));
11557 bfd_elf64_swap_reloca_out (output_bfd
,
11559 outrel
.r_offset
+= 8;
11560 outrel
.r_addend
= addend
;
11562 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
11565 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
11566 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
11567 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
11568 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
11569 else if (indx
!= 0)
11570 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
11574 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11576 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11578 /* Write the .got section contents for the sake
11580 loc
= got
->contents
+ off
;
11581 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
11585 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
11587 outrel
.r_addend
+= relocation
;
11588 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
11589 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
11591 loc
= relgot
->contents
;
11592 loc
+= (relgot
->reloc_count
++
11593 * sizeof (Elf64_External_Rela
));
11594 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11597 /* Init the .got section contents here if we're not
11598 emitting a reloc. */
11601 relocation
+= addend
;
11602 if (tls_type
== (TLS_TLS
| TLS_LD
))
11604 else if (tls_type
!= 0)
11606 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11607 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
11608 relocation
+= DTP_OFFSET
- TP_OFFSET
;
11610 if (tls_type
== (TLS_TLS
| TLS_GD
))
11612 bfd_put_64 (output_bfd
, relocation
,
11613 got
->contents
+ off
+ 8);
11618 bfd_put_64 (output_bfd
, relocation
,
11619 got
->contents
+ off
);
11623 if (off
>= (bfd_vma
) -2)
11626 relocation
= got
->output_offset
+ off
;
11628 /* TOC base (r2) is TOC start plus 0x8000. */
11629 addend
= -TOC_BASE_OFF
;
11633 case R_PPC64_PLT16_HA
:
11634 case R_PPC64_PLT16_HI
:
11635 case R_PPC64_PLT16_LO
:
11636 case R_PPC64_PLT32
:
11637 case R_PPC64_PLT64
:
11638 /* Relocation is to the entry for this symbol in the
11639 procedure linkage table. */
11641 /* Resolve a PLT reloc against a local symbol directly,
11642 without using the procedure linkage table. */
11646 /* It's possible that we didn't make a PLT entry for this
11647 symbol. This happens when statically linking PIC code,
11648 or when using -Bsymbolic. Go find a match if there is a
11650 if (htab
->plt
!= NULL
)
11652 struct plt_entry
*ent
;
11653 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11654 if (ent
->addend
== orig_addend
11655 && ent
->plt
.offset
!= (bfd_vma
) -1)
11657 relocation
= (htab
->plt
->output_section
->vma
11658 + htab
->plt
->output_offset
11659 + ent
->plt
.offset
);
11660 unresolved_reloc
= FALSE
;
11666 /* Relocation value is TOC base. */
11667 relocation
= TOCstart
;
11669 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
11670 else if (unresolved_reloc
)
11672 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
11673 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
11675 unresolved_reloc
= TRUE
;
11678 /* TOC16 relocs. We want the offset relative to the TOC base,
11679 which is the address of the start of the TOC plus 0x8000.
11680 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11682 case R_PPC64_TOC16
:
11683 case R_PPC64_TOC16_LO
:
11684 case R_PPC64_TOC16_HI
:
11685 case R_PPC64_TOC16_DS
:
11686 case R_PPC64_TOC16_LO_DS
:
11687 case R_PPC64_TOC16_HA
:
11688 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
11691 /* Relocate against the beginning of the section. */
11692 case R_PPC64_SECTOFF
:
11693 case R_PPC64_SECTOFF_LO
:
11694 case R_PPC64_SECTOFF_HI
:
11695 case R_PPC64_SECTOFF_DS
:
11696 case R_PPC64_SECTOFF_LO_DS
:
11697 case R_PPC64_SECTOFF_HA
:
11699 addend
-= sec
->output_section
->vma
;
11702 case R_PPC64_REL16
:
11703 case R_PPC64_REL16_LO
:
11704 case R_PPC64_REL16_HI
:
11705 case R_PPC64_REL16_HA
:
11708 case R_PPC64_REL14
:
11709 case R_PPC64_REL14_BRNTAKEN
:
11710 case R_PPC64_REL14_BRTAKEN
:
11711 case R_PPC64_REL24
:
11714 case R_PPC64_TPREL16
:
11715 case R_PPC64_TPREL16_LO
:
11716 case R_PPC64_TPREL16_HI
:
11717 case R_PPC64_TPREL16_HA
:
11718 case R_PPC64_TPREL16_DS
:
11719 case R_PPC64_TPREL16_LO_DS
:
11720 case R_PPC64_TPREL16_HIGHER
:
11721 case R_PPC64_TPREL16_HIGHERA
:
11722 case R_PPC64_TPREL16_HIGHEST
:
11723 case R_PPC64_TPREL16_HIGHESTA
:
11724 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
11726 /* The TPREL16 relocs shouldn't really be used in shared
11727 libs as they will result in DT_TEXTREL being set, but
11728 support them anyway. */
11732 case R_PPC64_DTPREL16
:
11733 case R_PPC64_DTPREL16_LO
:
11734 case R_PPC64_DTPREL16_HI
:
11735 case R_PPC64_DTPREL16_HA
:
11736 case R_PPC64_DTPREL16_DS
:
11737 case R_PPC64_DTPREL16_LO_DS
:
11738 case R_PPC64_DTPREL16_HIGHER
:
11739 case R_PPC64_DTPREL16_HIGHERA
:
11740 case R_PPC64_DTPREL16_HIGHEST
:
11741 case R_PPC64_DTPREL16_HIGHESTA
:
11742 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11745 case R_PPC64_DTPMOD64
:
11750 case R_PPC64_TPREL64
:
11751 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
11754 case R_PPC64_DTPREL64
:
11755 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11758 /* Relocations that may need to be propagated if this is a
11760 case R_PPC64_REL30
:
11761 case R_PPC64_REL32
:
11762 case R_PPC64_REL64
:
11763 case R_PPC64_ADDR14
:
11764 case R_PPC64_ADDR14_BRNTAKEN
:
11765 case R_PPC64_ADDR14_BRTAKEN
:
11766 case R_PPC64_ADDR16
:
11767 case R_PPC64_ADDR16_DS
:
11768 case R_PPC64_ADDR16_HA
:
11769 case R_PPC64_ADDR16_HI
:
11770 case R_PPC64_ADDR16_HIGHER
:
11771 case R_PPC64_ADDR16_HIGHERA
:
11772 case R_PPC64_ADDR16_HIGHEST
:
11773 case R_PPC64_ADDR16_HIGHESTA
:
11774 case R_PPC64_ADDR16_LO
:
11775 case R_PPC64_ADDR16_LO_DS
:
11776 case R_PPC64_ADDR24
:
11777 case R_PPC64_ADDR32
:
11778 case R_PPC64_ADDR64
:
11779 case R_PPC64_UADDR16
:
11780 case R_PPC64_UADDR32
:
11781 case R_PPC64_UADDR64
:
11783 if ((input_section
->flags
& SEC_ALLOC
) == 0)
11786 if (NO_OPD_RELOCS
&& is_opd
)
11791 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
11792 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
11793 && (must_be_dyn_reloc (info
, r_type
)
11794 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
11795 || (ELIMINATE_COPY_RELOCS
11798 && h
->elf
.dynindx
!= -1
11799 && !h
->elf
.non_got_ref
11800 && !h
->elf
.def_regular
)
11803 ? h
->elf
.type
== STT_GNU_IFUNC
11804 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
11806 Elf_Internal_Rela outrel
;
11807 bfd_boolean skip
, relocate
;
11812 /* When generating a dynamic object, these relocations
11813 are copied into the output file to be resolved at run
11819 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
11820 input_section
, rel
->r_offset
);
11821 if (out_off
== (bfd_vma
) -1)
11823 else if (out_off
== (bfd_vma
) -2)
11824 skip
= TRUE
, relocate
= TRUE
;
11825 out_off
+= (input_section
->output_section
->vma
11826 + input_section
->output_offset
);
11827 outrel
.r_offset
= out_off
;
11828 outrel
.r_addend
= rel
->r_addend
;
11830 /* Optimize unaligned reloc use. */
11831 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
11832 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
11833 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
11834 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
11835 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
11836 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
11837 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
11838 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
11839 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
11842 memset (&outrel
, 0, sizeof outrel
);
11843 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
11845 && r_type
!= R_PPC64_TOC
)
11846 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
11849 /* This symbol is local, or marked to become local,
11850 or this is an opd section reloc which must point
11851 at a local function. */
11852 outrel
.r_addend
+= relocation
;
11853 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
11855 if (is_opd
&& h
!= NULL
)
11857 /* Lie about opd entries. This case occurs
11858 when building shared libraries and we
11859 reference a function in another shared
11860 lib. The same thing happens for a weak
11861 definition in an application that's
11862 overridden by a strong definition in a
11863 shared lib. (I believe this is a generic
11864 bug in binutils handling of weak syms.)
11865 In these cases we won't use the opd
11866 entry in this lib. */
11867 unresolved_reloc
= FALSE
;
11870 && r_type
== R_PPC64_ADDR64
11872 ? h
->elf
.type
== STT_GNU_IFUNC
11873 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
11874 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11877 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11879 /* We need to relocate .opd contents for ld.so.
11880 Prelink also wants simple and consistent rules
11881 for relocs. This make all RELATIVE relocs have
11882 *r_offset equal to r_addend. */
11891 ? h
->elf
.type
== STT_GNU_IFUNC
11892 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
11894 (*_bfd_error_handler
)
11895 (_("%B(%A+0x%lx): relocation %s for indirect "
11896 "function %s unsupported"),
11899 (long) rel
->r_offset
,
11900 ppc64_elf_howto_table
[r_type
]->name
,
11904 else if (r_symndx
== 0 || bfd_is_abs_section (sec
))
11906 else if (sec
== NULL
|| sec
->owner
== NULL
)
11908 bfd_set_error (bfd_error_bad_value
);
11915 osec
= sec
->output_section
;
11916 indx
= elf_section_data (osec
)->dynindx
;
11920 if ((osec
->flags
& SEC_READONLY
) == 0
11921 && htab
->elf
.data_index_section
!= NULL
)
11922 osec
= htab
->elf
.data_index_section
;
11924 osec
= htab
->elf
.text_index_section
;
11925 indx
= elf_section_data (osec
)->dynindx
;
11927 BFD_ASSERT (indx
!= 0);
11929 /* We are turning this relocation into one
11930 against a section symbol, so subtract out
11931 the output section's address but not the
11932 offset of the input section in the output
11934 outrel
.r_addend
-= osec
->vma
;
11937 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
11941 sreloc
= elf_section_data (input_section
)->sreloc
;
11942 if (!htab
->elf
.dynamic_sections_created
)
11943 sreloc
= htab
->reliplt
;
11944 if (sreloc
== NULL
)
11947 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
11950 loc
= sreloc
->contents
;
11951 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11952 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11954 /* If this reloc is against an external symbol, it will
11955 be computed at runtime, so there's no need to do
11956 anything now. However, for the sake of prelink ensure
11957 that the section contents are a known value. */
11960 unresolved_reloc
= FALSE
;
11961 /* The value chosen here is quite arbitrary as ld.so
11962 ignores section contents except for the special
11963 case of .opd where the contents might be accessed
11964 before relocation. Choose zero, as that won't
11965 cause reloc overflow. */
11968 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11969 to improve backward compatibility with older
11971 if (r_type
== R_PPC64_ADDR64
)
11972 addend
= outrel
.r_addend
;
11973 /* Adjust pc_relative relocs to have zero in *r_offset. */
11974 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
11975 addend
= (input_section
->output_section
->vma
11976 + input_section
->output_offset
11983 case R_PPC64_GLOB_DAT
:
11984 case R_PPC64_JMP_SLOT
:
11985 case R_PPC64_JMP_IREL
:
11986 case R_PPC64_RELATIVE
:
11987 /* We shouldn't ever see these dynamic relocs in relocatable
11989 /* Fall through. */
11991 case R_PPC64_PLTGOT16
:
11992 case R_PPC64_PLTGOT16_DS
:
11993 case R_PPC64_PLTGOT16_HA
:
11994 case R_PPC64_PLTGOT16_HI
:
11995 case R_PPC64_PLTGOT16_LO
:
11996 case R_PPC64_PLTGOT16_LO_DS
:
11997 case R_PPC64_PLTREL32
:
11998 case R_PPC64_PLTREL64
:
11999 /* These ones haven't been implemented yet. */
12001 (*_bfd_error_handler
)
12002 (_("%B: relocation %s is not supported for symbol %s."),
12004 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
12006 bfd_set_error (bfd_error_invalid_operation
);
12011 /* Do any further special processing. */
12017 case R_PPC64_ADDR16_HA
:
12018 case R_PPC64_REL16_HA
:
12019 case R_PPC64_ADDR16_HIGHERA
:
12020 case R_PPC64_ADDR16_HIGHESTA
:
12021 case R_PPC64_TOC16_HA
:
12022 case R_PPC64_SECTOFF_HA
:
12023 case R_PPC64_TPREL16_HA
:
12024 case R_PPC64_DTPREL16_HA
:
12025 case R_PPC64_TPREL16_HIGHER
:
12026 case R_PPC64_TPREL16_HIGHERA
:
12027 case R_PPC64_TPREL16_HIGHEST
:
12028 case R_PPC64_TPREL16_HIGHESTA
:
12029 case R_PPC64_DTPREL16_HIGHER
:
12030 case R_PPC64_DTPREL16_HIGHERA
:
12031 case R_PPC64_DTPREL16_HIGHEST
:
12032 case R_PPC64_DTPREL16_HIGHESTA
:
12033 /* It's just possible that this symbol is a weak symbol
12034 that's not actually defined anywhere. In that case,
12035 'sec' would be NULL, and we should leave the symbol
12036 alone (it will be set to zero elsewhere in the link). */
12041 case R_PPC64_GOT16_HA
:
12042 case R_PPC64_PLTGOT16_HA
:
12043 case R_PPC64_PLT16_HA
:
12044 case R_PPC64_GOT_TLSGD16_HA
:
12045 case R_PPC64_GOT_TLSLD16_HA
:
12046 case R_PPC64_GOT_TPREL16_HA
:
12047 case R_PPC64_GOT_DTPREL16_HA
:
12048 /* Add 0x10000 if sign bit in 0:15 is set.
12049 Bits 0:15 are not used. */
12053 case R_PPC64_ADDR16_DS
:
12054 case R_PPC64_ADDR16_LO_DS
:
12055 case R_PPC64_GOT16_DS
:
12056 case R_PPC64_GOT16_LO_DS
:
12057 case R_PPC64_PLT16_LO_DS
:
12058 case R_PPC64_SECTOFF_DS
:
12059 case R_PPC64_SECTOFF_LO_DS
:
12060 case R_PPC64_TOC16_DS
:
12061 case R_PPC64_TOC16_LO_DS
:
12062 case R_PPC64_PLTGOT16_DS
:
12063 case R_PPC64_PLTGOT16_LO_DS
:
12064 case R_PPC64_GOT_TPREL16_DS
:
12065 case R_PPC64_GOT_TPREL16_LO_DS
:
12066 case R_PPC64_GOT_DTPREL16_DS
:
12067 case R_PPC64_GOT_DTPREL16_LO_DS
:
12068 case R_PPC64_TPREL16_DS
:
12069 case R_PPC64_TPREL16_LO_DS
:
12070 case R_PPC64_DTPREL16_DS
:
12071 case R_PPC64_DTPREL16_LO_DS
:
12072 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
12074 /* If this reloc is against an lq insn, then the value must be
12075 a multiple of 16. This is somewhat of a hack, but the
12076 "correct" way to do this by defining _DQ forms of all the
12077 _DS relocs bloats all reloc switches in this file. It
12078 doesn't seem to make much sense to use any of these relocs
12079 in data, so testing the insn should be safe. */
12080 if ((insn
& (0x3f << 26)) == (56u << 26))
12082 if (((relocation
+ addend
) & mask
) != 0)
12084 (*_bfd_error_handler
)
12085 (_("%B: error: relocation %s not a multiple of %d"),
12087 ppc64_elf_howto_table
[r_type
]->name
,
12089 bfd_set_error (bfd_error_bad_value
);
12096 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12097 because such sections are not SEC_ALLOC and thus ld.so will
12098 not process them. */
12099 if (unresolved_reloc
12100 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
12101 && h
->elf
.def_dynamic
))
12103 (*_bfd_error_handler
)
12104 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12107 (long) rel
->r_offset
,
12108 ppc64_elf_howto_table
[(int) r_type
]->name
,
12109 h
->elf
.root
.root
.string
);
12113 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
12121 if (r
!= bfd_reloc_ok
)
12123 if (sym_name
== NULL
)
12124 sym_name
= "(null)";
12125 if (r
== bfd_reloc_overflow
)
12130 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12131 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
12133 /* Assume this is a call protected by other code that
12134 detects the symbol is undefined. If this is the case,
12135 we can safely ignore the overflow. If not, the
12136 program is hosed anyway, and a little warning isn't
12142 if (!((*info
->callbacks
->reloc_overflow
)
12143 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
12144 ppc64_elf_howto_table
[r_type
]->name
,
12145 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
12150 (*_bfd_error_handler
)
12151 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12154 (long) rel
->r_offset
,
12155 ppc64_elf_howto_table
[r_type
]->name
,
12163 /* If we're emitting relocations, then shortly after this function
12164 returns, reloc offsets and addends for this section will be
12165 adjusted. Worse, reloc symbol indices will be for the output
12166 file rather than the input. Save a copy of the relocs for
12167 opd_entry_value. */
12168 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
12171 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
12172 rel
= bfd_alloc (input_bfd
, amt
);
12173 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
12174 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
12177 memcpy (rel
, relocs
, amt
);
12182 /* Adjust the value of any local symbols in opd sections. */
12185 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
12186 const char *name ATTRIBUTE_UNUSED
,
12187 Elf_Internal_Sym
*elfsym
,
12188 asection
*input_sec
,
12189 struct elf_link_hash_entry
*h
)
12191 struct _opd_sec_data
*opd
;
12198 opd
= get_opd_info (input_sec
);
12199 if (opd
== NULL
|| opd
->adjust
== NULL
)
12202 value
= elfsym
->st_value
- input_sec
->output_offset
;
12203 if (!info
->relocatable
)
12204 value
-= input_sec
->output_section
->vma
;
12206 adjust
= opd
->adjust
[value
/ 8];
12210 elfsym
->st_value
+= adjust
;
12214 /* Finish up dynamic symbol handling. We set the contents of various
12215 dynamic sections here. */
12218 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
12219 struct bfd_link_info
*info
,
12220 struct elf_link_hash_entry
*h
,
12221 Elf_Internal_Sym
*sym
)
12223 struct ppc_link_hash_table
*htab
;
12224 struct plt_entry
*ent
;
12225 Elf_Internal_Rela rela
;
12228 htab
= ppc_hash_table (info
);
12230 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12231 if (ent
->plt
.offset
!= (bfd_vma
) -1)
12233 /* This symbol has an entry in the procedure linkage
12234 table. Set it up. */
12235 if (!htab
->elf
.dynamic_sections_created
12236 || h
->dynindx
== -1)
12238 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
12240 && (h
->root
.type
== bfd_link_hash_defined
12241 || h
->root
.type
== bfd_link_hash_defweak
));
12242 rela
.r_offset
= (htab
->iplt
->output_section
->vma
12243 + htab
->iplt
->output_offset
12244 + ent
->plt
.offset
);
12245 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
12246 rela
.r_addend
= (h
->root
.u
.def
.value
12247 + h
->root
.u
.def
.section
->output_offset
12248 + h
->root
.u
.def
.section
->output_section
->vma
12250 loc
= (htab
->reliplt
->contents
12251 + (htab
->reliplt
->reloc_count
++
12252 * sizeof (Elf64_External_Rela
)));
12256 rela
.r_offset
= (htab
->plt
->output_section
->vma
12257 + htab
->plt
->output_offset
12258 + ent
->plt
.offset
);
12259 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
12260 rela
.r_addend
= ent
->addend
;
12261 loc
= (htab
->relplt
->contents
12262 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
12263 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
12265 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
12270 Elf_Internal_Rela rela
;
12273 /* This symbol needs a copy reloc. Set it up. */
12275 if (h
->dynindx
== -1
12276 || (h
->root
.type
!= bfd_link_hash_defined
12277 && h
->root
.type
!= bfd_link_hash_defweak
)
12278 || htab
->relbss
== NULL
)
12281 rela
.r_offset
= (h
->root
.u
.def
.value
12282 + h
->root
.u
.def
.section
->output_section
->vma
12283 + h
->root
.u
.def
.section
->output_offset
);
12284 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
12286 loc
= htab
->relbss
->contents
;
12287 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12288 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
12291 /* Mark some specially defined symbols as absolute. */
12292 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
12293 sym
->st_shndx
= SHN_ABS
;
12298 /* Used to decide how to sort relocs in an optimal manner for the
12299 dynamic linker, before writing them out. */
12301 static enum elf_reloc_type_class
12302 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
12304 enum elf_ppc64_reloc_type r_type
;
12306 r_type
= ELF64_R_TYPE (rela
->r_info
);
12309 case R_PPC64_RELATIVE
:
12310 return reloc_class_relative
;
12311 case R_PPC64_JMP_SLOT
:
12312 return reloc_class_plt
;
12314 return reloc_class_copy
;
12316 return reloc_class_normal
;
12320 /* Finish up the dynamic sections. */
12323 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
12324 struct bfd_link_info
*info
)
12326 struct ppc_link_hash_table
*htab
;
12330 htab
= ppc_hash_table (info
);
12331 dynobj
= htab
->elf
.dynobj
;
12332 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
12334 if (htab
->elf
.dynamic_sections_created
)
12336 Elf64_External_Dyn
*dyncon
, *dynconend
;
12338 if (sdyn
== NULL
|| htab
->got
== NULL
)
12341 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
12342 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
12343 for (; dyncon
< dynconend
; dyncon
++)
12345 Elf_Internal_Dyn dyn
;
12348 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
12355 case DT_PPC64_GLINK
:
12357 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
12358 /* We stupidly defined DT_PPC64_GLINK to be the start
12359 of glink rather than the first entry point, which is
12360 what ld.so needs, and now have a bigger stub to
12361 support automatic multiple TOCs. */
12362 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
12366 s
= bfd_get_section_by_name (output_bfd
, ".opd");
12369 dyn
.d_un
.d_ptr
= s
->vma
;
12372 case DT_PPC64_OPDSZ
:
12373 s
= bfd_get_section_by_name (output_bfd
, ".opd");
12376 dyn
.d_un
.d_val
= s
->size
;
12381 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
12386 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
12390 dyn
.d_un
.d_val
= htab
->relplt
->size
;
12394 /* Don't count procedure linkage table relocs in the
12395 overall reloc count. */
12399 dyn
.d_un
.d_val
-= s
->size
;
12403 /* We may not be using the standard ELF linker script.
12404 If .rela.plt is the first .rela section, we adjust
12405 DT_RELA to not include it. */
12409 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
12411 dyn
.d_un
.d_ptr
+= s
->size
;
12415 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
12419 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
12421 /* Fill in the first entry in the global offset table.
12422 We use it to hold the link-time TOCbase. */
12423 bfd_put_64 (output_bfd
,
12424 elf_gp (output_bfd
) + TOC_BASE_OFF
,
12425 htab
->got
->contents
);
12427 /* Set .got entry size. */
12428 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
12431 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
12433 /* Set .plt entry size. */
12434 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
12438 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
12439 brlt ourselves if emitrelocations. */
12440 if (htab
->brlt
!= NULL
12441 && htab
->brlt
->reloc_count
!= 0
12442 && !_bfd_elf_link_output_relocs (output_bfd
,
12444 &elf_section_data (htab
->brlt
)->rel_hdr
,
12445 elf_section_data (htab
->brlt
)->relocs
,
12449 if (htab
->glink
!= NULL
12450 && htab
->glink
->reloc_count
!= 0
12451 && !_bfd_elf_link_output_relocs (output_bfd
,
12453 &elf_section_data (htab
->glink
)->rel_hdr
,
12454 elf_section_data (htab
->glink
)->relocs
,
12458 /* We need to handle writing out multiple GOT sections ourselves,
12459 since we didn't add them to DYNOBJ. We know dynobj is the first
12461 while ((dynobj
= dynobj
->link_next
) != NULL
)
12465 if (!is_ppc64_elf (dynobj
))
12468 s
= ppc64_elf_tdata (dynobj
)->got
;
12471 && s
->output_section
!= bfd_abs_section_ptr
12472 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
12473 s
->contents
, s
->output_offset
,
12476 s
= ppc64_elf_tdata (dynobj
)->relgot
;
12479 && s
->output_section
!= bfd_abs_section_ptr
12480 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
12481 s
->contents
, s
->output_offset
,
12489 #include "elf64-target.h"